Solving tile drainage problems by using model data
Grover, B.L., Kirkham, Don
Solving tile drainage problems by using model data - Ames 1964 - 1-48 p. - Drainage, Problems Iowa Agricultural and Home Economics Experiment Station. Research Bulletin No. 523 .
Solving tile drainage problems by using model data - Ames 1964 - 1-48 p. - Drainage, Problems Iowa Agricultural and Home Economics Experiment Station. Research Bulletin No. 523 .