RAO, S. N. S. (1977). Soil microbiology: Soil microorganisms and plant growth. Oxford & IBH Publishers.
Lua i Stíl Chicago (17ú heag.)RAO, Subba N. S. Soil Microbiology: Soil Microorganisms and Plant Growth. Oxford & IBH Publishers, 1977.
Lua MLA (9ú heag.)RAO, Subba N. S. Soil Microbiology: Soil Microorganisms and Plant Growth. Oxford & IBH Publishers, 1977.
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