Não informado. (1978). Advances in agricultural technology. Science and Education Administration.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Advances in Agricultural Technology. Berkeley, Calif: Science and Education Administration, 1978.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Advances in Agricultural Technology. Science and Education Administration, 1978.
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