vapour resistance

acoustic spectroscope anotogaster sieboldii (selys) beam luminosity contactless positiontransmitter finton gyrosyn compass James Merritt Ives Koppers-Totzek gasifier line unit metallic sieve Mori Yoshiro negative oxygen ion generator non-receipt nuchal spine pollution-creating source revised amount rotating mercury film disc-ring electrode Saint Helena single-destination shortest-path problem spring mechanization