00530cam a22001693  450000100060000000300080000600500170001400800410003103500100007204000270008208200160010910000210012524500750014626000850022130000230030644000310032933183BD-DhUL20141031084139.0870610s1973    xx            000 0 und d  a33183  aANLbengcANLdBD-DhUL  a549.47bSHM1 aBrooks, David B.10aMinerals :ban expanding or a dwindling resource?  /cDavid B. Brooks.  aOttawa :bMineral Resources Branch, Dept. of Energy, Mines and Resources,c1973.  av, 17 p. ;c24 cm. 0aMineral bulletin ;vMR 134