000 00670nam a22002177a 4500
999 _c497
_d497
003 GSMBLIc
008 190821b ||||| |||| 00| 0 eng d
041 _aEIN
082 _2DDC 21
_a551.71
_bRSC
110 _aThe Royal Society of Canada
_9685
245 _aThe grenville problem
_bSpecial publications : No. 1
260 _aCanada
_bUniversity of Toronto press
_c1956
300 _aviii, [1], 119p.
_bill.
_c25.5cm x 17cm
_f1 map
650 _aPrecambrian geologic period
_91311
650 _aGeology
_932
650 _aStratigraphic geology
_91312
650 _aNorth America
_91556
700 _aThomson, James.E.
_eed
_91557
942 _cLB
_k551.71
_mRSC
945 _ePNA