The New Encyclopædia BritannicaEncyclopædia Britannica, 1992 |
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Page 84
... organic molecules by the use of metallic selenium . His most important work concerned the di- ene synthesis , in which organic compounds with two carbon - to - carbon double bonds were used to effect syntheses of many cyclic organic ...
... organic molecules by the use of metallic selenium . His most important work concerned the di- ene synthesis , in which organic compounds with two carbon - to - carbon double bonds were used to effect syntheses of many cyclic organic ...
Page 359
... organic compounds , such as proteins , lipids , and starches , that maintain the organ- isms ' life processes . The autotrophic segment of the ecosystem is commonly referred to as the producer level . Organic matter generated by ...
... organic compounds , such as proteins , lipids , and starches , that maintain the organ- isms ' life processes . The autotrophic segment of the ecosystem is commonly referred to as the producer level . Organic matter generated by ...
Page 584
... organic chemical industry ; chemical formula , CH2 = CH2 . It occurs in both petroleum and natural gas , but the bulk of the industrial material is produced by heating of higher hydrocarbons . Numer- ous large - scale processes have ...
... organic chemical industry ; chemical formula , CH2 = CH2 . It occurs in both petroleum and natural gas , but the bulk of the industrial material is produced by heating of higher hydrocarbons . Numer- ous large - scale processes have ...
Contents
14 written for Catherine the Great Observations | 14 |
Consult the INDEX first | 581 |
Didius Julianus marble bust in | 703 |
Copyright | |
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