Talk:Paper - A Human Embryo of Twenty-five Somites
From Embryology
<pubmed>17104635</pubmed>| PMC1252340
West, C. M. 1937. A Human Embryo of Twenty-five Somites. J. Anal, 71, 169-201.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1252340/pdf/janat00531-0013.pdf