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Experimental glass blowing for boys (1920)
Lynde, Carleton John, b. 1872, Gilbert, A. C. (Alfred Carlton), 1884-1961, A.C. Gilbert Company · New Haven, CT : A.C. Gilbert Co. · leaf 21
FIG. 27DANCING POLLYWOGS forces the nozzle in the other direction. 20 BOY ENGINEERINGGlass blowing and working
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