The Encyclopedia Americana, Količine 1–30Bernard S. Cayne Grolier, 1981 |
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Stran 145
... importance . Naphthalene , quinoline , and tar acids , including phenol , cresols , and xylenols , are the most important of the chemicals . Anthracene is also recovered from the coal tar , but in smaller quantities than the other ...
... importance . Naphthalene , quinoline , and tar acids , including phenol , cresols , and xylenols , are the most important of the chemicals . Anthracene is also recovered from the coal tar , but in smaller quantities than the other ...
Stran 581
... important tim- ber sources . Enormous quantities of various spe- cies provide construction lumber . " Hard " pine lumber comes from the southern longleaf pine ( P. palustris ) , and " soft " pine lumber is cut principally from white ...
... important tim- ber sources . Enormous quantities of various spe- cies provide construction lumber . " Hard " pine lumber comes from the southern longleaf pine ( P. palustris ) , and " soft " pine lumber is cut principally from white ...
Stran 762
... important in highly sensitive electrical instruments such as galva- nometers . Copper is also used as an alloying element in a wide variety of applications in which it is a minor constituent of the resultant alloy . One such ...
... important in highly sensitive electrical instruments such as galva- nometers . Copper is also used as an alloying element in a wide variety of applications in which it is a minor constituent of the resultant alloy . One such ...
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