record bore hole survey

acid forming bacterium aeromodel crank opening electric-furnace smelting elevation-angle error Kelvin's minimum-energy theorem L. R. R. la chatre light beacon system low-velocity electron beam main security old-fashionable photogalvanographic protozoea larva subepidermal abscess substitute(material) system damping total impedance of a human body unverbalized vallecula epiglottidis