edited by M. Khogali and J. R. S. Hales. xviii + 312 pages, illustrated. Academic Press, Inc., Publishers, 111 Fifth Avenue, New York, New York 10003. 1984. $36.50
by David Boter and Marcos Restrepo. xiv + 379 pages, illustrated. Ediciones Corporación para Investigaciones Biológicas, Apartado Aereo 7378, Medellín, Colombia. 1984
