000 00504nam a2200181Ia 4500
999 _c54166
_d54166
005 20201113112207.0
008 180710s9999 xx 000 0 und d
041 _aEN
082 _a333.85097
_bPOL
_223
245 2 _aA Policy for mineral aggregate resource management in Ontario
260 _aToronto
_bMinistry of natural resources
_c1977
300 _aix, 230 p.
500 _aincludes appendix
509 _aNS
650 _aCrushed stone industry
650 0 _aAggregates
_9107798
942 _cS