黑龙港常庄试区种植业结构数学规划模型

尹雁峰, 由懋正

Mathematical Model of Planting Structure in Changzhuang Experimental Unit of Heilonggang Area

Yin Yanfeng, You Maozheng

华北农学报 . 1991, (2): 112 -117 . DOI: 10.3321/j.issn:1000-7091.1991.02.020