Rema Devi, S. Environmental factors of malaria persistence : a study at Valiyathura, Thiruvananthapuram city / S. Rema Devi and S. Das - Thiruvananthapuram: Centre for Developement Studies, 1999 - 26 p. : charts; 24 cm. - Discussion Paper; no.39 . Bibliography : p.24-25 ISBN: 8187621028 (pbk.) Subjects--Topical Terms: Malaria--Environmental aspects--India--Kerala--ValiyuthuraMalaria--Prevention--India--Kerala--Valiyuthura Dewey Class. No.: 362.1969362