TY  - BOOK
AU  - Theobald,G.H
ED  - Food and Agriculture Organization of the United Nations (Rome),
TI  - Methods and machines for tile and other tube drainage
U1  - 630.82 
PY  - 1963///
CY  - Rome
PB  - FAO
KW  - Drainage
KW  - Drain-tiles
KW  - Irrigation
KW  - Sewerage
N1  - Bibliography: p. 101-104
ER  -