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