Technical-Review-Borehole-Drilling-And-Rehabilitation-under-field-conditions - ( ICRC ).
https://library.icrc.org/library/docs/DOC/icrc-0998-002-2012.pdf
2012 // 132 pages.
https://library.icrc.org/library/docs/DOC/icrc-0998-002-2012.pdf
2012 // 132 pages.