4

Minimum-Risk Bedding for Flexible Drain Pipes

Willardson, Lyman S., Watkins, Reynold K.
Journal:
Journal of Irrigation and Drainage Engineering
Year:
2002
Language:
english
File:
PDF, 52 KB
english, 2002
5

Water Movement in Horizontally Layered Soils

Samani, Zohrab, Cheraghi, Ali, Willardson, Lyman
Journal:
Journal of Irrigation and Drainage Engineering
Year:
1989
Language:
english
File:
PDF, 553 KB
english, 1989
6

Trench Bottom Shape Effects on Flexible Pipe Strength

John J. Parker,, Lyman S. Willardson,
Journal:
Transactions of the ASAE
Year:
1981
Language:
english
File:
PDF, 6.37 MB
english, 1981
9

Practical Land Grading Based on Least Squares

Scaloppi, Edmar J., Willardson, Lyman S.
Journal:
Journal of Irrigation and Drainage Engineering
Year:
1986
Language:
english
File:
PDF, 607 KB
english, 1986
10

Head Loss at Soil‐Drain Envelope Interfaces

Miller, David W., Willardson, Lyman S.
Journal:
Journal of Irrigation and Drainage Engineering
Year:
1983
Language:
english
File:
PDF, 618 KB
english, 1983
12

Drainage along the River Nile

Willardson, Lyman S.
Journal:
Journal of Irrigation and Drainage Engineering
Year:
2001
Language:
english
File:
PDF, 8 KB
english, 2001
13

Infiltration Under Surge Flow Irrigation

Zohrab A. Samani,, Wynn R. Walker,, Lyman,, Willardson,
Journal:
Transactions of the ASAE
Year:
1985
Language:
english
File:
PDF, 856 KB
english, 1985
15

Plow Installation of Plastic Drain Tubing

Lyman S. Willardson,
Journal:
Transactions of the ASAE
Year:
1974
File:
PDF, 1.37 MB
1974