共 16 条
[1]
Ajala M. K., 2007, American-Eurasian Journal of Agricultural and Environmental Science, V2, P182
[2]
[Anonymous], 2003, SAS STAT USERS GUIDE
[3]
CHIDUWA G, 2008, TROPICAL ANIMAL HLTH, V37, P333
[6]
Drucker A. G., 2004, International Journal of Agricultural Sustainability, V2, P77, DOI 10.1080/14735903.2004.9684569
[8]
Huynh TTT, 2006, ASIAN J AGRIC DEV, V3, P69