Methods of applying super-phosphate to groundnuts in Northern Nigeria /

by Goldsworthy, P. R.
Published 1965

Leaf sampling for the determination of the phosphorous status of sorghum /

by Goldsworthy, P. R.
Published 1966

Fertilizer trials with soya beans in Northern Nigeria /

by Goldsworthy, P. R.
Published 1965

Responses of cereals to fertilizers in Northern Nigeria, Sorghum /

by Goldsworthy, P. R.
Published 1967

Soil fertility investigations in the middle belt of Nigeria /

by Watson, K. A.
Published 1965