SCS National Engineering Handbook Section 15 Irrigation
Soil Conservation Service,
SCS National Engineering Handbook Section 15 Irrigation Reports Soil Conservation Service - USDA: Soil Conservation Service, 1969. - 29.
Techniques, equipment & materials
631.7
SCS National Engineering Handbook Section 15 Irrigation Reports Soil Conservation Service - USDA: Soil Conservation Service, 1969. - 29.
Techniques, equipment & materials
631.7