Caleb, I. D. Hydra gangetica, description of the Indian hydra. - [1st ed.]. - Allahabad, Kitab Mahal [1963] - 52 p. illus. 19 cm. LCCN: sa 64002476 //r982 Subjects--Topical Terms: Hydra gangetica.Cnidaria--India. LC Class. No.: QL377.H9 / C26