00276nam a2200097Ia 4500080001800000100001600018245007000034260004500104300001000149583001900159  a08.10.03 B617  aBirch, M.A.  aCeramic tile body formulations based on raw materials from Guyana  bCommonwealth SecretariataLondonGBc1984  a41 p.  c3/7/00kM2LMGR