1. Manual of Eng. Practice;American Society Of Civil Engineers,1949
2. Adjusting snow-runoff correlation curves by use of autumn precipitation;Mac Lean,1948
3. Ground-water records In river-flow forecasting;Merhiam;Trans. Amer. Geophys. Union,1948
4. A conception of runoff phenomena;Snyder;Trans. Amer. Geophys. Union,1939