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Collections Organic Roots Collection Remove constraint Organic Roots Collection: Organic Roots Collection Subjects Soil productivity Remove constraint Soil productivity: Soil productivity Subjects soil organic matter Remove constraint soil organic matter: soil organic matter

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1. Renovation of worn-out soils

Author:: Spillman, W. J. (William Jasper) , 1863-1931
Subject:: Soil management , Soil productivity , soil , soil amendments , soil degradation , soil conservation , soil quality , soil fertility , soil erosion , land restoration , green manures , soil organic matter , soil exhaustion
Physical description:: 16 p. ; 23 cm.
Additional Author(s):: Spillman, W. J. (William Jasper) , 1863-1931
Collection:: Organic Roots Collection
Series:: Farmers' bulletin