000			00270nam a2200097 4500
999			_c336118 _d336118
082			_a552.5 _bCOL.S
100			_aCollinson,J.D. and Thompson,D.B.
245			_aSedimentary Structures _cCollinson,J.D. and Thompson,D.B.
260			_aLondon _c1982 _bAllen &Unwin
942			_cBK