Doren, K.L. creator enk New Delhi CBS Publishers 2016 1997 eng xxv, 586 p. : ill. maps ; 23 cm. K.L. Doren. Includes glossary ; references & index. Air Pollution TD883 .C573 1997 363.7392 DOR 9788123929019 (pbk.) 96070574 961101 20240911061607.0 1638031