机译:Comparison of nitrogen losses by runoff from two different cultivating patterns in sloping farmland with yellow soil during maize growth in Southwest China
机译:Barringer,Ricard E.,(与Robert K. Ramers合作),War = patterns of Conflict,mIT press,mass。,1972,287 p。 Barringer,Richard E.,(与Robert K. Ramers合作),War = patterns of Conflict,mIT press,mass。,1972,127 p。