611.013 C280 Wislocki, George Bernays, 1892- ... On the placentation of the sloth (Bradypus griseus). By George B. Wislocki... with two plates. (In Carnegie institution of Washington. Contributions to embryology. Washington, 1925. 29x 23 cm. vol. XVI, p. 5-21. 2 pl) Contributions to embryology, no. 78 11 Literature": p. 20