Norman, M. J. T. The ecology of tropical food crops / M.J.T. Norman, C.J. Pearson, P.G.E. Searle. - Cambridge : Cambridge University Press, 1984. - ix, 369 p. ISBN: 0521240824 Subjects--Topical Terms: Food crops--Ecology.--TropicsTropical crops--Ecology. Dewey Class. No.: 631 / .01 / 57452623