000 00466nam a22001937a 4500
015 _a1025
041 _a1
080 _a626.86
_bNIC
100 _aNicholson, H.H.
245 _aThe principles of field drainage
260 _aCambridge University Press
_bU.K.
_c1942
300 _a165p.
_bill,. fig.
650 _aAgriculture
852 _a4L5-3
999 _c564
_d564