000 00276nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aPerkins (Henry C)
245 0 _aAir pollution
260 _b"McGraw Hill Book, USA"
260 _c1974
365 _b63.75
942 _cBK
999 _c203566
_d203566