000 00347nam a2200121Ia 4500
008 160509s9999 xx 000 0 und d
020 _a0036-8075
100 _aScience
245 _aScience : 1987 : Volume 236(Apr-Jun) : Shelf 16.5
260 _bThe American Association for the Advancement of Science
_c1987
300 _a1690p.
650 _aScience
999 _c4273
_d4273