000 00257nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _aNR:041975
_bRRC.58
245 0 _aSearch for the best concentration of ethrel
260 _aThailand
_bRRC
_c1975
942 _cBK
999 _c26423
_d26423