000			003940000a22001570004500
245			_aAquatic weed problems in irrigation systems
100			_aBRABBEN, T.E.
100			_aBOLTON, P.
260			_aWallingford _bHydraulics Research Ltd.
300			_a15 p., ill.
080			_a626.8 _bB7
650			_aINLAND WATERWAYS-WEED CONTROL
650			_aIRRIGATION
041			_aEN
942			_cBK
999			_c63515 _d63515