vertex of a quadric

betaretrovirus (mammalian type b & type d retrovir Burneston Camphlaephora dew meter dielectric rod guide geotectonic map goniometer kalam madrepore marble metal-ligand net margin pattern bonding pole smokers Reguengos de Monsaraz rehberger restricted information specific torque coefficient (Esson coefficient) ST_chance-and-possibility_unachievable transnumeral Valentinovka