00341nam a2200145   450000100060000000300030000600500170000900800410002603500190006703500180008605000210010410000170012524500170014226000360015919295UR20220427164433.0061103|||||||||||||||||||||||||||||||| d  a(janium) 19284  a(janium)19283 4aQE515b.T42 19721 aWright, J.B.10aGeochemistry  bThe Open University Pressc1972