Jeffers, J.N.R. An introduction to systems analysis : with ecological applications / John N. R. Jeffers. - Baltimore : University Park Press, 1978. - x, 198 p. : ill. ; 22 cm. - A series of student texts in contemporary biology. . Includes index. Includes bibliographical references. ISBN: 0713126531 (pbk.) Subjects--Topical Terms: Ecology--Mathematical models.System analysis.