000 00283nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a5+6
_bHAR
100 _aHardy, J T
245 0 _aScience technology and the environment
260 _aPhiladelphia
_bW B Saunders
_c1975
942 _cBK
999 _c23991
_d23991