France Tabac, 1988, 36, p. 22-7, ISSN.0296-3361 The bearings of phosphorus and potassium fertilization SCHMELTZ C.
France Tabac, 1988, 43, p. 4-22, ISSN.0296-3361 Soils SCHMELTZ C. CFPPT, Bergerac, France Draining. Ridging. Plastic mulching....