The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 1997 |
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Page 314
... limestone , sandstone , and granite were all avail- able . But the extracting , moving , and working of stone was a costly process , and the quarrying of stone was a state monopoly . Stone emerged as an elite construction material used ...
... limestone , sandstone , and granite were all avail- able . But the extracting , moving , and working of stone was a costly process , and the quarrying of stone was a state monopoly . Stone emerged as an elite construction material used ...
Page 323
... limestone and clay together in a kiln ; the clay provided silicon compounds , which when combined with water formed stronger bonds than the calcium compounds of limestone . In the 1830s Charles Johnson , another British cement ...
... limestone and clay together in a kiln ; the clay provided silicon compounds , which when combined with water formed stronger bonds than the calcium compounds of limestone . In the 1830s Charles Johnson , another British cement ...
Page 680
... limestone platform shared with Mexico and Belize . Sandwiched between the volcanic landscape and the Petén are the high ranges and valleys of the sierras of northern Central America . These arc gently eastward from Mexico for a distance ...
... limestone platform shared with Mexico and Belize . Sandwiched between the volcanic landscape and the Petén are the high ranges and valleys of the sierras of northern Central America . These arc gently eastward from Mexico for a distance ...
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