000 00520nam a22001937a 4500
015 _a4286
041 _a1
080 _a627.53:681.14
_bBEE
100 _aBeers, W. F. J. van
245 _aComputing drain spacings
260 _aInternational institute for land reclamation and improvement
_bNetherlands
_c1976
300 _a47p.
_bfig., table, chart
650 _aEngineering
852 _a4R3-4
999 _c3529
_d3529