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So we know that builders had learned to use more than one pulley at a time on a given load , though they may not yet have had the compound pulley block holding two or more pulleys in the same frame . Finally , he asks many shrewd ...
Egyptian craftsmen also learned to plate or coat the cheaper metals with costlier ones . In fact , some oriental craftsmen may have gone further than that . In 1936 , at Khujut Rabu'a near Baghdad , was found a small pottery jar , about ...
The pious and learned Saint Thomas ( 1225—74 ) spent much of his life arguing , at enormous length and in tiny illegible handwriting , that there was no conflict between science and religion ; that all truth was one , and that therefore ...
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LibraryThing ReviewCrítica de los usuarios - PDCRead - LibraryThing
This was originally written in 1962, and is therefore is a little dated. Sprague de Camp has written a book all about the different civilisations and the technologies that that invented or acquired ... Leer comentario completo
LibraryThing ReviewCrítica de los usuarios - Schmerguls - LibraryThing
5609. The Ancient Engineers, by L. Sprague De Camp (read 21 Jan 2019) This book was first published in 1963 and hence its bibliography includes nothing after that date. It undertakes to tell of the ... Leer comentario completo
One The Coming of the Engineers
Three The Mesopotamian Engineers
Four The Greek Engineers
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