ratio of return on resources employed

balance forward calderite double curve turnout in opposite direction duration response gas-immersion laser doping Gentiana stragulata genus Pityrogramma kryten monophyric nonreturn-to-zero method palaeotropical posterior pole of lens prisses right-feet sand filter unit short-lived radionuclide steady state velocity trioza (megatrioza) beilschmiediae tryptophane desmase viniculturists