William, Grant E. Ecology and natural resource management : systems analysis and simulation / by William E. Grant. - New York : John Wiley and Sons, 1997. - xvii, 373 p. : 32 cm. ISBN: 0-471-13786-3 Subjects--Index Terms: Ecology - Computer simulation; Natural resources - Management - Computer simulation; System analysis. Dewey Class. No.: 333.7201 WIL / 146