Excerpt from Examination of Water for Sanitary and Technic Purposes The day is probably not far distant when it will be recognised that both chemical and bacteriologic examina tions of ordinary surface-waters are of little importance, since such waters can not be allowed for drinking purposes unless efficiently filtered. Apart from various general considerations, the investigations as to the relations of insects and other minute organisms as conveyors of disease germs must lead us to regard with suspicion any water that ...
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Excerpt from Examination of Water for Sanitary and Technic Purposes The day is probably not far distant when it will be recognised that both chemical and bacteriologic examina tions of ordinary surface-waters are of little importance, since such waters can not be allowed for drinking purposes unless efficiently filtered. Apart from various general considerations, the investigations as to the relations of insects and other minute organisms as conveyors of disease germs must lead us to regard with suspicion any water that may receive material from the surface of the ground. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.