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close this bookSpecial Public Works Programmes - SPWP - Anti-Erosion Ditches - Training Element and Technical Guide for SPWP Workers, Booklet No. 1 (ILO - UNDP, 84 p.)
close this folder3. Different types of anti-erosion ditches
View the document(introduction...)
View the document3.1 Silt catchment pits
View the document3.2 Forest tiering
View the document3.3 Forest terracing
View the document3.4 Cropping terraces