1. von Brand, T., “Chemical Physiology of Endoparasitic Animals” (Acad. Press, Inc., New York, 1952).
2. Chowdhury, A. B., Dasgupta, B., Ray, H. N., and Bhaduri, N. V., Bull. Calcutta School Trop. Med., 3, 52 (1955).
3. Glick, D., “Techniques of Histo- and Cytochemistry” (Interscience Pub., New York and London).
4. McGee-Russell, S. M., Nature, 175, 301 (1955).