TY  - BOOK
AU  - Theobald,G.H.
TI  - Methods and machines for tile and other tube drainage,
T2  - FAO agricultural development paper
AV  - S401.U6 A13 no. 78
U1  - 631.6 
PY  - 1963///
CY  - Rome
PB  - Food and Agriculture Organization of the United Nations
KW  - Drainage
KW  - Drain-tiles
KW  - fast
KW  - slootreinigers
KW  - ditch cleaners
KW  - drainageploegen
KW  - drain ploughs
KW  - drainage uitrusting
KW  - drainage equipment
KW  - drainage door leidingen
KW  - pipe drainage
KW  - ondergrondse drainage
KW  - subsurface drainage
KW  - buisdrainage
KW  - tile drainage
KW  - sleufgravers
KW  - trench cutters
N1  - Includes bibliographical references (pages 101-104)
ER  -