000 00260nam a2200085Ia 4500
008 130123s9999 xx 000 0 und d
082 _a631.3
245 _aTransactions of the ASAE Vol 41 Part No.4-6
260 _aMichigan
_bAmerican Society of Agril. Engineers
_c1998
999 _c77538
_d77538