000
003040000a22001210004500
008
151211b xxu||||| |||| 00| 0 eng d
041
_a
eng
080
_a
627(02)
_b
S6
942
_c
BK
110
_a
Soil conservation service, Washington
245
_a
National engineering handbook
260
_a
Washington
999
_c
138709
_d
138709