PakCat catalogue record Basic river water quality models computer aided learning (CAL) programme on water quality modelling (WQMCAL version 1.1) By JOLANKAI, Géza (Dr.) Bibliographic details PublisherUNESCO Publication placeParis Publication year1997 Material typeBook Physical description50, 3 pages ; 30 cm + 1 computer disc (3 1/2 in.). SubjectsWater quality