TY - BOOK AU - Howard, Albert, TI - An agricultural testament U1 - 631.8 PY - 1940/// CY - London PB - Oxford University Press KW - Compost KW - Fertilisers and manures KW - Soils KW - Agriculture-By-products KW - Humus N1 - Continuation of an earlier book-The waste products of agriculture 19 31; Includes bibliographical references ER -