宁夏地区不同生长阶段奶牛产污系数的对比分析
张振伟，庞伟英，周玉香，张巧娥，闫宏
Comparative Analysis on Pollutant Producing Coefficients of Lactating Cows at Different Growth Stages in NingXia
ZHANG Zhen-wei, PANG Wei-ying, ZHOU Yu-xiang, ZHANG Qiao-e, YAN Hong
家畜生态学报
.
2015, (1): 50
-54
.
