000 00299nam a2200085Ia 4500
008 130123s9999 xx 000 0 und d
082 _a576.64
245 _aCurrent Contents (Agri. Biology and Environmental Sciences) Vol.30 No.47-52
260 _aPhiladelphia.
_bInstitute for Scientific Information.
_c1999
999 _c79542
_d79542