..............page:86-88,112
Test and Study of GIN Grout
zhang hai-jun 1; zhang shu-jun 2; zhang yan 2; song jie 1 (1.luoyang xiaolangdi hydro-electric engineering ltd company; jiyuan 454681; china; 2.hydro-electric engineering bureau no.1 of china; changchun 130062; china)
..............page:108-112
..............page:25-27,38
..............page:52-54,58
..............page:97-100
..............page:101-103
..............page:104-107
Fertigation and Fertilizer
li dong-guang; xu xiu-cheng; zhang yan-li (college of chemical engineering; zhengzhou university; zhengzhou 450002 china)
..............page:78-81