TY  - RPRT
TI  - Computer program NCALC user's manual; verification of Manning's roughness coefficient in channels
AU  - R.D. Jarrett
AU  - H.E. Petsch
PY  - 1985
DO  - 10.3133/wri854317
UR  - https://pubs.usgs.gov/publication/wri854317
ID  - wri854317
ER  -