000 00340nam a2200133Ia 4500
008 130223s9999 xx 000 0 und d
245 _aWhat you should know about pollution and agriculture
260 _aOttawa
260 _c1972
300 _a1-11 p.
440 _aCanada Department of Agricultu
901 _pS21244
942 _cB
_2udc
999 _c136834
_d136834