Wilson, Carl L. (Carl Louis), 1897- Botany / Carl L. Wilson and Walter E. Loomis ; with line drawings by Hannah T. Croasdale - 4th ed. - Calcutta : Oxford and IBH , 1969 - xii, 626 p. : ill. ; 25 cm. LCCN: 67-011746 Subjects--Topical Terms: Botany