BRABBEN, T.E. BOLTON, P.
Aquatic weed problems in irrigation systems - Wallingford Hydraulics Research Ltd. - 15 p., ill.
INLAND WATERWAYS-WEED CONTROL
IRRIGATION
626.8 / B7
Aquatic weed problems in irrigation systems - Wallingford Hydraulics Research Ltd. - 15 p., ill.
INLAND WATERWAYS-WEED CONTROL
IRRIGATION
626.8 / B7