photographic emulsion speed indicator

artificial-snow boiling down pan chopper synchronizing rectifier circuit combinably four-point starting box hoe steel John Philip Marquand khmelnitskis levulose-dextrose liquid duplicating multiplex printing telegraph natatory hair Norman window reduction gear lubricating oil gravity tank reserve peak load rated output of gas turbine self-trimming collier simple syphilitic retinitis south-americans stag weekends standard mortality ratio