ISBN: 9787536459786 - 养蚕防病关键技术/新农村实用技术掌中宝 (1 risultati)

paperback. Condizione: New. Paperback Pages Number: 130 Language: Chinese. Silkworm disease prevention key technologies based on the popularity of the promotion of science and sericulture. sericulture-oriented technical staff and the vast majority of silkworm breeder. in plain language about the scientific knowledge of sericulture in disease prevention . The book is divided into six parts. the first description of the preparatory work of the sericulture and understanding from the physiological knowledge of Bombyx mori s.…