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1by 83510 KOCK, W., 12680 International Federation of Organic Agriculture Movements, Montreal (Canadá), 34368 Conference on Basic Techniques in Ecological Agriculture, Montreal (Canadá), 2-5 Oct 1978“...Montreal (Canadá), 1978...”
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3by 104536 PERLAS, J.N., 12680 International Federation of Organic Agriculture Movements, Montreal (Canadá), 35718 International Conference on Basic Techniques in Ecological Agriculture, Montreal, Quebec (Canadá), 2-5 Oct 1978“...Montreal (Canadá), 1978...”
bibliotecaIICA