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The availability of the nitrogen in some bone materials used in horticultureM. I. E. Long; O. Owen; G. W. Winsor · 1951
The properties of some urea-formaldehyde materials in relation to their possible use as nitrogenous fertilizersO. Owen; G. W. Winsor; M. I. E. Long · 1952
Laboratory tests on some hoof and horn materials used in horticulture. I.—Raw samples without preliminary heat treatmentO. Owen; G. W. Winsor; M. I. E. Long · 1953