People in a Changing WorldLaidlaw, 1974 - Economic geography |
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Page A-81
... Metals CHAPTER OVERVIEW The discovery of metallurgy - the art and science of working with metal -- enabled man to change the face of the earth . As metal tools replaced those made from stone , man's ability to clear the land , till the ...
... Metals CHAPTER OVERVIEW The discovery of metallurgy - the art and science of working with metal -- enabled man to change the face of the earth . As metal tools replaced those made from stone , man's ability to clear the land , till the ...
Page A-95
... metal in the plumbing industry . In recent years , however , new and cheaper alloys have begun to replace it . Duralumin , an alloy of copper and alu- minum , is a strong metal which is also very attractive . Industries needing metal ...
... metal in the plumbing industry . In recent years , however , new and cheaper alloys have begun to replace it . Duralumin , an alloy of copper and alu- minum , is a strong metal which is also very attractive . Industries needing metal ...
Page A-102
... metal ? SUMMARY It was not until the discovery of metal and the development of techniques which enabled man to make metal tools that man began to gain mastery over his environ- ment . The use of copper and bronze ac- companied the rise ...
... metal ? SUMMARY It was not until the discovery of metal and the development of techniques which enabled man to make metal tools that man began to gain mastery over his environ- ment . The use of copper and bronze ac- companied the rise ...
Contents
The Earth in Space | A-1 |
Map Atlas | B-1 |
People and Regions of the World | B-7 |
Copyright | |
11 other sections not shown
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