EMBRYOLOGY REFERENCES:
Website of Jaap van der Wal
http://www.embryo.nl/
A Biodynamic Approach to Development from Conception to Birth
Erich Blechschmidt
Developmental Dynamics in Hum
Discovering Evolutionary Principles through Comparative Morphology
Jos Verhulst
Fifth Edition by Schoenwolf, Bleyl, Brauer, and Francis-West
William J. Larsen