Text ( visual ) : unmediated National soil fertility project / J. D. Colwell. -- [Adelaide] : CSIRO Division of Soils in collaboration with state departments of agriculture and the fertilizer industry. -- 2 v. : ill. ; 25 cm. -- Includes bibliographies. -- (BA18292952) ; https://ci.nii.ac.jp/ncid/BA18292952 Author Heading(s): Colwell, J. D.. -- Classification(s): LCC : S599.7.A1 ; DC : 631.4/22/0994. -- Subject Heading(s): LCSH : Soil fertility -- Australia ; LCSH : Soils -- Australia