W.P.A. technical series.
Technical services laboratory circular.
Washington, D.C. : Work Projects Administration, Professional and Services Division,
Industrial arts /
Description based on: No. 3 (July 5, 1939); title from cover.
Each no. has also a distinctive title.
Some numbers have supplements.
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|Full view no.2-3 1939:Mar.4-July 5||Northwestern University|