Robertis, E. D. P. De. General cytology / E. D. P. De. Robertis, Wiktor W. Nowinski and Francisco A. Saez. - 3rd ed. - Philadelphia : W. B. Saunders, c 1963. - xvi, 555 p. : ill. ; 23 cm. Includes index. 337 337 Subjects--Topical Terms: Cytology. Dewey Class. No.: 574.87 / D34g