Sewage Solutions: Answering the Call of Nature: No. 12 (New Futures)
by Nick Grant,etc.,Dave Thorpe
ISBN 13: 9781898049135
Format: Paperback (192 pages) Publisher: Centre for Alternative Technology Publications Published: 01 May 1999 Other Format: Paperback
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Safe to Drink?: The Quality of Your Water (New Futures)
by Julie Stauffer,Dave Thorpe
ISBN 13: 9781898049142
Format: Paperback (158 pages) Publisher: Centre for Alternative Technology Publications Published: 01 Aug 1996