Template:Ref-BarcroftElliottFlexner1934
From Embryology
Barcroft J. Elliott RH. Flexner LB. Hall FG. Herkel W. McCarthy EF. McClurkin T. and Talaat M. Conditions of foetal respiration in the goat. (1934) J Physiol. 83(2):192-214. PMID 16994623
