00884nam a2200217Ia 4500 CTU_230032 210402s9999 xx 000 0 und d 630.9 G857 Grigg, David B. The agricultural systems of the world : An evolutionary approach D. B. Grigg Cambridge Cambridge University Press 1974 This book is about the prevalent characteristics and distribution of the major agricultural systems of the world - shifting cultivation, wet rice cultivation, pastoral nomadism, Mediterranean agriculture, mixed farming, dairying, plantations, ranching and large-scale grain production. Nông nghiệp,Agriculture Lịch sử,History dqhieu Trung tâm Học liệu Trường Đại học Cần Thơ