Mathews, Willis W. Atlas of descriptive embryology / [by] Willis W. Mathews. - New York : Macmillan, [1971, c1972] LCCN: 79146940 //r852 Subjects--Topical Terms: Embryology -- Atlases.--Embryology -- Atlases. LC Class. No.: QL956 / .M38 Dewey Class. No.: 599/.03/30222