Isbn: 9787534928383 - quality ( export ) duck production guide(chinese edition) (1 resultados)

paperback. Condición: New. Language:Chinese.Pub Date :2003-10-1 Pages: 113 Publisher: Henan Science and Technology Publishing House book series . from the introduction of improved varieties and biological . behavioral characteristics start to 1998 published by NRC feeding standards -based. high-quality livestock in accordance with produce the nutritional needs of the various growth stages and technical standards and systematic introduction to the green livestock production techniques . mainly pollution-free feed. place. …