TY - GEN ED - SYMPOSIUM ON MINERAL RESOURCES OF SRI LANKA AND ITS DEVELOPMENTS (1984 : Moratuwa) TI - Mineral resources of Sri Lanka and Its developments PY - 1984/// CY - Moratuwa PB - University of Moratuwa KW - MINERAL RESOURCES KW - MINERALOGY N1 - Nonlinear phenomena in elasticity : some examples; Digital microwave communications : an engineering overview ER -