TY  - RPRT
TI  - An examination of the state of art in inland waterways system lock research 
AU  - Pearl, Martin H
PY  - 1982
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2411
DO  - 10.6028/NBS.IR.81-2411
ER  -