publisher: Practical Action
publish date: December 1st 1988
format: paperback pages: 40
language: English
ISBN:
1853390607 (9781853390609)
publisher: Practical Action
publish date: May 1st 1996
format: paperback pages: 144
language: English
ISBN:
1853393479 (9781853393471)
publisher: R.D. Whitney & Co. publish date: February 1st 2000
format: paperback pages: 137
language: English
ISBN:
0967518903 (9780967518909)
publisher: ITDG Publishing
publish date: April 1st 2005
format: paperback pages: 229
language: English
ISBN:
1853395978 (9781853395970)