Abstract
Ultrastructure of the Hen Eggshell and its Physiological Interpretation, by P. C. M. Simons, xviii + 136 pp. Centre for Agricultural Publishing and Documentation, Wageningen, Netherlands. ISBN 90 220 0340 X. f30.
Embryonic Development in the Eggs of the Pekin Duck, by R. S. Kaltofen. 72 pp. Centre for Agricultural Publishing and Documentation, Wageningen, Netherlands. ISBN 90 220 03531. f11.50.