Control of crop productivity /

by Pearson, C. J., Pearson, C. J.
Published 1984

Sustainable dryland cropping in relation to soil productivity

by Pearson, C.J.
Published 1995

The ecology of tropical food crops /

by Norman, Michael John Thornley, Norman, Michael John Thornley, Pearson, C. J., Searle, P. G. E.
Published 1984

The ecology of tropical food crops /

by Norman, Michael John Thornley
Published 1995

The ecology of tropical food crops /

by Norman, M.J.T.
Published 1995