Ramkrishna, P.S.. Ecology of biological invasion in the tropics / P.S. Ramkrishna. - New Delhi : International Scientific Publications , 1991. - viii,195p. : ill,figs,tables ; 26x19cm. . NULL ISBN: Rs. 300.00 (Pbk) Subjects--Index Terms: ECOLOGY Dewey Class. No.: 577.180913 / RAM/E