You requested books by authors starting with "Patrick, D. A.", and with titles starting with "Breaker height measuring devices". (Exclude extended shelves)
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Patrick, D. A.: Breaker height measuring devices (University of California, Department of Engineering, 1950), also by Robert L. Wiegel and Berkeley. Institute of Engineering Research University of California (page images at HathiTrust; US access only)1 item was found.
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