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บรรณานกรม
                                                                  ุ

                     US.ARMY.(1945) . TM 5 - 295  MILITARY  WATER  SUPPLY  AND  PURIFICATION.

                                    WASHINGTON ,D.C. :  UNITED STATES GOVERNMENT PRINTING OFFICE.

                     ------------.(1967) . TM 5 - 700  FIELD  WATER  SUPPLY .  WASHINGTON ,D.C. :
                                    DEPARTMENT  OF  THE  ARMY.
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