The Encyclopedia Americana, Volume 7Grolier Incorporated, 1999 - Encyclopedias and dictionaries A thirty-volume encyclopedia covering important world events while providing major new treatments of selected topics in various academic fields. |
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Page 133
World Coal the remnants of plants that once flourished in Formed 133 Resources 136 some areas of the earth , since examination of coal Accumulation of 4. Coal Mining and Plant Debris 133 Production 137 through a microscope shows various ...
World Coal the remnants of plants that once flourished in Formed 133 Resources 136 some areas of the earth , since examination of coal Accumulation of 4. Coal Mining and Plant Debris 133 Production 137 through a microscope shows various ...
Page 143
The pilot plant for studying the Hygas process was put in operation in Chicago , Ill . This plant could produce 1.5 million cubic feet ( 42,000 cu meters ) of SNG per day from 75 tons of coal per day . In 1973 , it became the first ...
The pilot plant for studying the Hygas process was put in operation in Chicago , Ill . This plant could produce 1.5 million cubic feet ( 42,000 cu meters ) of SNG per day from 75 tons of coal per day . In 1973 , it became the first ...
Page 187
However , in 1690 the Dutch managed to obtain a few plants and placed them in botanical gardens in the Netherlands . ... De Clieu managed to keep the plant alive during the voyage back to Martinique in spite of an attempted kidnap ...
However , in 1690 the Dutch managed to obtain a few plants and placed them in botanical gardens in the Netherlands . ... De Clieu managed to keep the plant alive during the voyage back to Martinique in spite of an attempted kidnap ...
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