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Experimental Studies on the Differentiation of the Endodermal Organs in Amphibia (III): The Relation between the Differentiation of Pharynx and Head-Mesenchyme
Catalogue of Helminths of Waterfowl (A natidae) by MALCOLM E. McDONALD. Published by the Bureau of Sport Fisheries and Wildlife, US Dept. of the Interior. Washington, DC Special Scientific Report-Wildlife No. 126. 1969.