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By 1917, they sold chemistry sets, which they produced through World War II, in spite of restrictions on materials. Robert Treat Johnson, noting the number of chemistry students at Yale whose interest in the science began with a chemistry set, argued the production of chemistry sets was a "patriotic duty." [5]
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Porter Chemical Company was an American toy manufacturer that developed and produced chemistry sets aimed as educational toys for aspiring junior scientists. The company's Chemcraft kits were first sold at major retail by Woodward & Lothrop , and appeared soon after at other retailers in the country.
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You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses ...
Set index articles on molecular formulas (2,418 P) Pages in category "Set index articles on chemistry" The following 200 pages are in this category, out of approximately 791 total.
Bahasa Indonesia; Interlingua; ... Download as PDF; Printable version; ... Set index articles on chemistry (2 C, 791 P) + Works about chemistry (4 C)