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1

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Soils and fertilizers.

by Bear, Firman E.
Published 1953

Tam Metin Erişim

Kitap

2

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Hunger signs in crops - A symposium /

Published 1951

Kitap

3

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Theory and practice in the use of fertilizers /

by Bear, Firman E.
Published 1938

Kitap

4

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Diagnostic techniques for soils and crops : Their value and use in estimating the fertility status of soils and nutritional requirements of crops /

Published 1948

Kitap