611.013 c 280 V.13 Wislocki, George Bernays, 1892- ... On the placentation of the triactyl sloth (Bradypus grieus) with a description of some characters of the fetus, by George B. Wislocki... with six plates. (In Carnegie institution of Washington. Contributions to embryology. Washington, 1927. 29x 23 cm. vol. XIX, 209-227, [l] p. 6 pl ) (Continua en la ficha 2)