Alice Helen Frankel.
Chemists. (Occupational briefs on America's major: job fields, no. 29)
R650219. Chemists. By Alice Helen Frankel. (Occupational briefs on America's major: job fields, no. 29) NM: material completely rewritten. © 12Jan49; AA105273. Science Research Associates, Inc. (PWH); 29Dec76; R650219.
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