TY  - BOOK
AU  - Valera,Alfredo Bermas
TI  - A comparative assessment of three irrigation systems at Central Luzon, Philippines
PY  - 1985///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Irrigation
KW  - Philippines
KW  - Luzon
N1  - Thesis (Ph.D.)-Cornel University, 1985
ER  -