000 00281nam a2200121Ia 4500
008 160710s1975 xx 000 0 und d
082 _a540 VAL
100 _aVALLARINO, L.M.
245 _aChallenges to Science.
260 _bMc-Graw Hill
_c1975
300 _a492
942 _2ddc
_cB
999 _c36566
_d36566