The New Encyclopaedia Britannica, Volumes 1-10Encyclopaedia Britannica, 1974 - Reference [1] Propaedia: outline of knowledge and guide to the Britannica.--[2]-[11] Micropaedia: ready reference and index.--[12]-[30] Macropaedia: knowledge in depth. |
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Page 196
... glass a surrogate for natural stones . Although the colours used are often not such as are found in nature , the glass is han- dled as though it were jade , the foot in particular being fashioned as though cut from stone . This lapidary ...
... glass a surrogate for natural stones . Although the colours used are often not such as are found in nature , the glass is han- dled as though it were jade , the foot in particular being fashioned as though cut from stone . This lapidary ...
Page 197
... glass Glass- making in Venice Optical glass. cosity in the two materials at a given temperature . Ordi- nary glass contains about 15 percent soda to render it workable at moderate temperatures . Lime is also neces- sary to prevent water ...
... glass Glass- making in Venice Optical glass. cosity in the two materials at a given temperature . Ordi- nary glass contains about 15 percent soda to render it workable at moderate temperatures . Lime is also neces- sary to prevent water ...
Page 208
Encyclopaedia Britannica Publishers, Inc. Staff. Silica glass formers soda - lime- borosilicate alumino- lead silica silicate Nonsilica glass formers * These compositions are typical of the various glass types . † Temperature at which ...
Encyclopaedia Britannica Publishers, Inc. Staff. Silica glass formers soda - lime- borosilicate alumino- lead silica silicate Nonsilica glass formers * These compositions are typical of the various glass types . † Temperature at which ...
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The New Encyclopaedia Britannica, Volumes 1-10 Encyclopaedia Britannica Publishers, Inc. Staff No preview available - 1974 |
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