TY  - BOOK
AU  - Nicholson,Harry Helstrip
TI  - The principles of field drainage
AV  - S621 .N5
U1  - 631.6 
PY  - 1942///
CY  - Cambridge [Eng.]
PB  - University press
KW  - Drainage
KW  - Great Britain
N1  - "A bibliography of field drainage" : p. 162
ER  -