HOME-MADE VACUUM CLEANER. A STEREOSCOPE FOR SINGLE PHOTOGRAPHS. Fig. 2BINOCULAR VISION THROUGH A LARGE LENS. Fig. 8A POWERFUL STEREOSCOPE FOR SINGLE PHOTOGRAPHS. VACUUM CLEANER. VIEWED THROUGH A DOUBLE DIAPHRAGM., scientific american, 1908-11-11
HOME-MADE VACUUM CLEANER. A STEREOSCOPE FOR SINGLE PHOTOGRAPHS. Fig. 2BINOCULAR VISION THROUGH A LARGE LENS. Fig. 8A POWERFUL STEREOSCOPE FOR SINGLE PHOTOGRAPHS. VACUUM CLEANER. VIEWED THROUGH A DOUBLE DIAPHRAGM., scientific american, 1908-11-11
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