Books by Otto J. Helweg
Recursos Hidraulicos - Planeac
Recursos Hidraulicos - Planeacion y Administracion
Microcomputer applications in
Microcomputer applications in water resources
Supplying water and saving the environment for six billion people
Water Research Planning and Ma
Water Research Planning and Management
Improving well and pump effici
Improving well and pump efficiency
Economic impact of water quali
Economic impact of water quality on river basin management
A salinity management strategy
A salinity management strategy for stream-aquifier systems