ISBN: 9787503850813 - 番鸭快速养殖关键技术问答(附光盘) (1 risultati)

paperback. Condizione: New. Paperback. Pub Date: 2008 03 of Pages: 107 in Publisher: China Forestry Publishing House with the expansion of production scale. the Muscovy duck production problems have become increasingly prominent. mainly keeping environmental degradation. disease prevention and control is difficult. extensive management. aquaculture by the concept of aging. production. supply. sales disjointed. To this end. I combine years of production practice and collected around the state-of-the-art scientific resear.…