Lynde, Carleton John, b. 1872, Gilbert, Alfred C. (Alfred Carlton), 1884-1961 · New Haven, Conn. : A.C. Gilbert Co. · leaf 117
Fig. 170. A magnifying glassFrom Lyndes Physics of the Household,published by The Macmillan Co. 114 GILBERT BOY ENGINEERING … Fig. 171. Astronomical telescope at Lick ObservatoryCourtesy of the Scientific American GILBERT LIGHT EXPERIMENTS 115
Light · Scientific recreations
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