Henry, S. G. B. Elementary mathematical economics / S.G.B. Henry - London : Routledge & K. Paul , 1969 - x, 111p. : ill. ; 19 cm. - Students library of economics . Bibliography: p. 106-109. ISBN: 0710062087 Subjects--Topical Terms: Economics, Mathematical Dewey Class. No.: 330.18 / HEN