នេះ Book មិន​មាន​ក្នុង​ភាសា​របស់​អ្នក, មើល​ក្នុង: English (en),
ឬ​ប្រើ​កម្មវិធី​បកប្រែ Google:  

This book may no longer be available in print.

This notebook includes sections of solar disinfection, moringa treatment, sand filtration, Kanchan aresenic filter, ceramic filters and other miscellaneous information.

Notebook with various page numbered sections, illustrated

Publication Details

  • Publisher: ECHO, Inc.
  • Dewey Decimal: 628.109
  • ECHO Library: 628.109 ECH
  • បណ្ណាល័យ ECHO Asia: TA.001