000 00261nam a2200085Ia 4500
008 130123s9999 xx 000 0 und d
082 _a631.3
245 _aTransactions of the ASAE Vol 46 Part No.1-2
260 _aMichigan
_bAmerican Society of Agril. Engineers
_c2003
999 _c78768
_d78768