Photograph of polarograph at Basic Magnesium, Inc.   Creator:   Basic Magnesium, Inc. ( Contributing Institution ) Publication Date:   1943-08-31 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Polarographs Machinery, supplies, equipment Genre:   Photographs Photograph of polarograph at Basic Magnesium, Inc.	Photograph of a man at work at the Basic Magnesium, Inc. technical laboratory   Creator:   Basic Magnesium, Inc. ( Contributing Institution ) Publication Date:   1943-11-12 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Polarographs Research, Industrial -- Laboratories Men Machinery, supplies, equipment Genre:   Photographs Photograph of a man at work at the Basic Magnesium, Inc. technical laboratory