000 00491nam a22002057a 4500
015 _a4788
041 _a1
080 _a626.86
_bDRA
110 _aU.S. Department of the Interior
245 _aDrainage manual
250 _aFirst
260 _aU.S. Department of the Interior
_c1978
300 _a286p.
_bfig., table
650 _aEngineering
852 _a3L 2-4
999 _c2856
_d2856