monographs, series of books, and pamphlets, and printed materials compiled in loose-leaf and bound volume format, all dealing with mechanical standards directed to government officials, architects, engineers and others concerned with mechanical standards

'architect':28 'book':4 'bound':16 'compil':10 'concern':32 'deal':20 'direct':24 'engin':29 'format':18 'govern':26 'leaf':14 'loos':13 'loose-leaf':12 'materi':9 'mechan':22,34 'monograph':1 'offici':27 'other':31 'pamphlet':6 'print':8 'seri':2 'standard':23,35 'volum':17

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