1-4 Black, L. A., Surveys of milk laboratories in war areas in the U. S. I. Practices in making agar plate counts. ... Test procedures and general observations. ... Some types are highly resistant to corrosion and chemical solutions, and are thus capable of replacing the more costly types of ... In these days of equipment scarcity, pump maintenance becomes an important subject (J-ll)- Nash has developed a glass centrifugal ... U. S. Bureau of Mines Questions aamp; Answers Handbook No.
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