ISBN: 9787543330177 - 蛋鸡经营管理与保健问答 郑成江,潘振亮 编 天津科技翻译出版公司 (1 risultati)

paperback. Condizione: New. Paperback. Pub Date: 2012 03 of Pages: 119 in Publisher: Tianjin Science and Technology Translation and Publishing Corporation hens operating management and health Q & A in the form of questions and answers on the process of laying hens feeding market research. investment risk. farm management. eggs chicken care and avoidance strategy in detail. I hope that through this book the dissemination of scientific chicken knowledge. to help farmers and friends in the process of laying hens feeding de.…