Theobald, G.H.
Methods and machines for tile and other tube drainage - UN, FAO 1963 - 105 - FAO agricultural development paper No.78 .
Tube drainage/ draining - methods
627.54 THE
100
Methods and machines for tile and other tube drainage - UN, FAO 1963 - 105 - FAO agricultural development paper No.78 .
Tube drainage/ draining - methods
627.54 THE
100