by Heathcote R.G
Published in Samaru Research Bulletin (Nigeria). no. 246. Reprint from: Proceedings of the 10th Colloquium of the International Potash Institute (1975)

by Heathcote, R.G
Published in Samaru research bulletin (1971)

by Heathcote, R.G
Published in Exp Agr (1970)

by Heathcote, R.G, Smithson, J.B
Published in Experimental agriculture (1974)

by Smithson J.B, Heathcote R.G
Published in Samaru Agricultural Newsletter (1976)

by Heathcote R.G, Smithson J.B
Published in Experimental Agriculture (1974)

by Heathcote, R.G, Stockinger, K.R
Published in Samaru research bulletin (1971)

by Bache, B.W, Heathcote, R.G
Published in Samaru research bulletin (1970)

by Bache, B.W, Heathcote, R.G
Published in Exp Agr (1969)

by Smithson, J.B, Heathcote, R.G
Published in Experimental agriculture (01.07.1974)

by Smithson, J.B, Heathcote, R.G
Published in Experimental agriculture (1977)

by Smithson, J.B. (Institute for Agricultural Research, Samaru, Zaria (Nigeria)), Heathcote, R.G
Published in Experimental Agriculture (UK) (1974)