International congress of soil science : transactions, 9th, Adelaide, Australia, 1968
International congress of soil science : transactions, 9th, Adelaide, Australia, 1968 - - Sydney Angus and Robertson, 1968 - v.1 23 cm - .
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Soils-Composition-Congresses
Soil permeability-Congresses
Soil science-Congresses
631.4 Int:9:68-1