TY  - BOOK
AU  - Theobald,G.H.
TI  - Methods and machines for tile and other tube drainage
T2  - FAO Agricultural Development Paper
PY  - 1963///
CY  - Rome
PB  - Food and Agriculture Organization of the United Nations
KW  - Drainage
KW  - Drain-tiles
N1  - Includes bibliographical references : p. [101]-104
ER  -