The Encyclopedia Americana, Količine 1–30Bernard S. Cayne Grolier, 1981 |
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Zadetki 1–3 od 81
Stran 98
... important uses are in metal - protective paints and with litharge in storage batteries . It is also used in glass , glazes , and vitreous enamels . Other lead oxides of commercial importance are the dioxide , PbO2 , and orange mineral ...
... important uses are in metal - protective paints and with litharge in storage batteries . It is also used in glass , glazes , and vitreous enamels . Other lead oxides of commercial importance are the dioxide , PbO2 , and orange mineral ...
Stran 175
... important impact on the organization and operation of the legislature . The presiding officer of a legislative house usually is chosen from the majority party , and in U. S. legislatures he serves as an important party leader . Seats on ...
... important impact on the organization and operation of the legislature . The presiding officer of a legislative house usually is chosen from the majority party , and in U. S. legislatures he serves as an important party leader . Seats on ...
Stran 420
... important roles . Other important ele- ments are iron , found in many enzymes and in the blood of higher organisms , and magnesium , a part of the chlorophyll molecule , the substance that is central to green - plant photosynthesis ...
... important roles . Other important ele- ments are iron , found in many enzymes and in the blood of higher organisms , and magnesium , a part of the chlorophyll molecule , the substance that is central to green - plant photosynthesis ...
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