U. S. STONEWARE

newer instruments as seismographs, magnetometers, and neutron log. The modern petroleum refinery could not exist without instrumenta- tion. Instrument...
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REPORT FOR ANALYTICAL CHEMISTS

At laboratory supply houses everywhere

PRECISE MASS MEASUREMENT USING ELECTRONIC RECORDING

C 6 HgS ( 1 1 2 . 1 6 0 8 ) ^

C6H1Q0N (1X2.1XI9K. C 8 H 1 6