00549cam a2200193 a 4500008004100000020001500041020001800056040000800074050002200082245005400104260004300158300001900201505001700220650001900237650001000256650004200266650003300308700001400341950607s1995    gw ab    b    001 0 eng    a3540580123  a9783540580126  aSDU00aQE389.6bO69 199500aOrigin and mineralogy of clays /cB. Velde (ed.).  aBerlin ;aNew York :bSpringer,c1995.  a334 p. :bill.  aHKBU Library 0aClay minerals. 0aClay. 0aClay mineralsxEnvironmental aspects. 0aClayxEnvironmental aspects.1 aVelde, B.