00355nam a2200121Ia 4500008004100000082002900041100002400070245003800094260003700132300001400169600002100183650002900204140224s9999    xx            000 0 und d  a581.12:633:631.524.84 M9  aAmthor, Jeffrey. S.  aRespiration and crop productivity  aNew YorkbSpringer-Verlag.c1989  axiv,215p.  aS.Jeffrey Amthor  aRespiration,Productivity