Excreta disposal in emergencies-A field manual - ( WEDC ).
Peter Harvey // ISBN 978 1 84380 113 9
1.29.Excreta disposal in emergencies-A field manual - ( WEDC ).Emergency water sources-Guidelines for selection and treatment - ( WEDC ).
2004 // 320 pages / Sarah House , Bob Reed // ISBN 1 84380 069 1
1.28.Emergency water sources-Guidelines for selection and treatment - ( WEDC ).#Books of reference#WEDC