The New Book of KnowledgeGrolier Incorporated, 2002 - Počet stran: 21 An illustrated encyclopedia with articles on history, literature, art and music, geography, mathematics, science, sports, and other topics. Some articles include activities, games, or experiments. |
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Strana 309
... natural build- ing blocks used by bacterial cells to manufac- ture substances such as folic acid that are necessary for basic processes in the cell . Be- cause sulfa drugs imitate the natural mole- cules that are used to make folic acid ...
... natural build- ing blocks used by bacterial cells to manufac- ture substances such as folic acid that are necessary for basic processes in the cell . Be- cause sulfa drugs imitate the natural mole- cules that are used to make folic acid ...
Strana 386
... NATURAL RESOURCES The natural resources of the Arctic can be divided into four main groups - furs , whale products , fish , and minerals . In the early days of Arctic exploration , seals attracted fur trad- ers . Because of the region's ...
... NATURAL RESOURCES The natural resources of the Arctic can be divided into four main groups - furs , whale products , fish , and minerals . In the early days of Arctic exploration , seals attracted fur trad- ers . Because of the region's ...
Strana 510
... natural gas fields , beginning in the 1960's , trans- formed Australia's energy potential . Oil fields in Bass Strait , off the coast of Victoria ; in southern Queensland ; and in Western Australia supply most of the country's oil and ...
... natural gas fields , beginning in the 1960's , trans- formed Australia's energy potential . Oil fields in Bass Strait , off the coast of Victoria ; in southern Queensland ; and in Western Australia supply most of the country's oil and ...
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