That any person or persons having discovered or invented any new and useful art, machine, manufacture, or composition of matter, or any new and useful improvement on any art, machine, manufacture, or composition of matter... The Mechanics' Magazine, Museum, Register, Journal, and Gazette - 232. lappuse1836Pilnskats - Par šo grāmatu
| 1951 - 756 lapas
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| Jan Vojáček - 1936 - 236 lapas
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| 432 lapas
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| 1950 - 1130 lapas
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