get to the root of something

17-OHD Asterias Seamount beef-rearing behavioristics catore Cystokon filed by accounting department for reference genus Nanomia hypoplastie heart London plane (tree) never call oesophagogastric junctions Pas de Calais pseudo-ophthalmoplegiasyndrome random access memory computer reciprocating machine slip dislocation text books travelling-wave oscilloscope Young's moduli