C. L.  Wisseman, Jr., Busvine, J. R., Murray, E. S., Kostrzewski, J., Smith, C. N., Fabrikant, I. B., Reeves, W. C., Gratz, N. G., Fox, J. P., Ormsbee, R. A., Tarizzo, M. L., Makara, G., Gaon, J. A., Gear, J. H., Traub, R., J. Vinson, W., Perry, A. S., and Eldridge, B. F., ?Open discussion?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 303 - 311.

D. E.  Weidhaas, Cole, M. M., Busvine, J. R., Steinberg, M., Traub, R., Smith, C. N., Gratz, N. G., and Makara, G., ?Open discussion: Biology and control of lice?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 209 - 211.

C. N.  Smith, Fox, J. P., J. Vinson, W., Schoof, H. F., Robbins, W. E., Perry, A. S., Busvine, J. R., and Gratz, N. G., ?Open discussion: Experimental louse control methods?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 248 - 250.

N. G.  Gratz, Tarizzo, M. L., Traub, R., and Eldridge, B. F., ?Panel leaders' reports: Summaries of session I?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 285 - 289.

R.  Traub, Gratz, N. G., Busvine, J. R., Gaon, J. A., Tarizzo, M. L., Reeves, W. C., May, J. M., Makara, G., Babione, R. W., Fox, J. P., and Wisseman, Jr., C. L., ?Panel leaders' reports: Summaries of session I: Open discussion?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 290 - 292.

R.  Traub, Gaon, J. A., Gratz, N. G., Busvine, J. R., and Reeves, W. C., ?Open discussion: Ecology of Louse-borne infections?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 102 - 103.

N. G.  Gratz, Gaon, J. A., Busvine, J. R., Wegner, Z., Fox, C., Gear, J. H., Smith, C. N., Gerberg, E. J., Fabrikant, I. B., Makara, G., Traub, R., Wisseman, Jr., C. L., and Tarasevich, I. V., ?Open discussion?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 47 - 49.

D. E.  Weidhaas, Cole, M. M., Gratz, N. G., Makara, G., Traub, R., and Smith, C. N., ?Open discussion?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, p. 188.

C. N.  Smith, Busvine, J. R., Jenkins, D. W., Krynski, S., Cole, M. M., Kostrzewski, J., Gaon, J. A., Tarizzo, M. L., Reeves, W. C., Gratz, N. G., and Kim, K. Chung, ?Biology and control of lice: D. Experimental louse control methods. Open discussion?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 261 - 267.

C. L.  Wisseman, Jr., Murray, E. S., Tarizzo, M. L., and Gratz, N. G., ?Open discussion:  Concepts of typhus control?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 279 - 282.

N. G.  Gratz, ?Louse powders: Problems in field programs?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, Washington, D.C., U.S.A.: Pan American Health Organization, 1973, pp. 180 - 181.

N. G.  Gratz, ?The current status of louse infestations throughout the world?, in Proceedings of the International Symposium on the control of lice and louse-borne diseases, vol. 263, A.  Horwitz, Ed. Washington, D.C.: Pan American Health Organization, 1973, pp. 23 - 31.

N. G.  Gratz, ?Treatment resistance in louse control?, in Scabies and Pediculosis, M.  Orkin, Maibach, M. I., Parisch, L. C., and Schwartzman, R. M., Eds. Philadelphia, Pennsylvania, USA: Lippincott, 1977, pp. 179 - 190.

N. G.  Gratz, The epidemiology of louse infestations. Geneva, Switzerland: World Health Organization, 1976.

N. G.  Gratz, ?Human lice. Their prevalence, control and resistance to insecticides. A review 1985-1997?, World Health Organization, Division of Control of Tropical Diseases (CDT), Geneva, Switzerland, 1997.

N. G.  Gratz, ?Epidemiology of louse infestations?, in Cutaneous infestations and insect bites, M.  Orkin and Maibach, H. I., Eds. New York, NY: Marcel Dekker, 1985, pp. 187 - 198.

N. G.  Gratz, ?Treatment resistance in louse control?, in Cutaneous infestations and insect bites, M.  Orkin and Maibach, H. I., Eds. New York, NY: Marcel Dekker, 1985, pp. 219 - 230.

N. G.  Gratz, ?The current status of louse infestations throughout the world?, in The control of lice and louse-bourne diseases, Scientific Publication No. 265, Washington, DC: Pan American Health Organzation, 1973, pp. 23 - 31.

D. E.  Weidhaas and Gratz, N. G., ?Lice?, Chronicle of the World Health Organization, vol. 82.858, pp. 1 - 10, 1982.

N. G.  Gratz, ?A rodent ectoparasite survey of Haifa port?, Journal of Parasitology, vol. 43, no. 3, pp. 328 - 331, 1957.