Michael, P. Ecological methods for field and laboratory investigations / P. Michael. - New Delhi : Tata McGraw-Hill, c1984 - xii, 402p. : ill. ; 25x19cm. Includes appendices, references and index ISBN: 0-07-451765-1 Subjects--Topical Terms: ECOLOGY Dewey Class. No.: 574.5 / MIC-ECO