(1983). Sulfur In South-east Asian & South Pacific Agriculture. [ADAB-The Sulphure Institut].
Chicago-viite (17. p.)Sulfur In South-east Asian & South Pacific Agriculture. [ADAB-The Sulphure Institut], 1983.
MLA-viite (8. p.)Sulfur In South-east Asian & South Pacific Agriculture. [ADAB-The Sulphure Institut], 1983.
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