学习丁颖同志严谨的治学精神开创衣业科研新局面5(1)庆祝建国弱周年专文我国农业科学技术工作的回顾与展望兽医生物制品事业的发展与成就”·…:::专论我国农业与粮食生产的现伏和发展前景..·…~关于调整粮食作物结构布局的初步探讨···“·~”黄土高原丘陵地区农业发展战略 Learning Comrade Ding Ying rigorous scholarship to create a new situation in the research of clothing industry 5 (1) Celebrate the weak anniversary of the founding of the Republic of China Agricultural Science and Technology Review and Prospect of the development and achievement of veterinary biological products business ... ::: monopoly on China’s agriculture Present Situation and Prospects of Grain Production · ···································································································································································································································································································.