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综述坚持科研为生产服务切实加强计划管理… …………一………………………·(1·1)饶阳试区综合防护林体系总体效益分析… ……………………………………(2·1)山茱萸在河北省生长情况的调研报告…… ……………………………………(3·1)引种育种白杨无性系引种试验初报………
Summary Insist on scientific research for the production of services to strengthen the program management ... ............ A ........................... (1.1) Raoyang District Integrated Shelterbelt System Overall Benefit Analysis ........................ .................. (2.1) Report on the Growth of Dogwood in Hebei Province ........................................... .........