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