共 45 条
[2]
[Anonymous], NAT LAND COV DAT
[6]
Duchin F, 2009, ECO-EFFIC IND SCI, V23, P23
[7]
ERB KH, ECOL EC, V69, P250
[8]
Fabiosa J.F., 2009, Land Allocation Effects of the Global Ethanol Surge, P32
[9]
*FED HIGHW ADM, ADD 1997 FED HIGHW C
[10]
*FED HIGHW ADM, HIGHW STAT 2006