Linear and nonlinear programming : an introduction to linear methods in mathematical programming / Roger Hartley. Hartley, Roger, 1946- Linear programming. Nonlinear programming. T57.74 .H37 1985 519.72 19 H332 Includes index. Bibliography: p. [205]-206. Chichester : E. Horwood ; New York : Halstead Press, 1985. 1985. 1985 Text 221 p. : eng Ellis Horwood series in mathematics and its applications. Statistics and operational research section Ellis Horwood series in mathematics and its applications. Statistics and operational research.