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1.
Percolation testing for septic tank drainage : principles of water flow and site and seasonal variation / by David E. Hill by
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: New Haven : U.S. Department of Soils and Climatology, 1966
Availability: Items available for loan: National Library of India (1)Call number: U.S 628.168 H 551.

2.
The connecticut geologysoil task force report on use of nutural resource data in land and water planning / by David E. Hill and Hugo F. Thomas by
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: New Heaven : The Connecticut Agriculture Expariment Station, 1972
Availability: Items available for loan: National Library of India (1)Call number: U.S 363.7394209746 H 551.

                                                                           
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