TY  - RPRT
TI  - Automated longwall guidance and control vertical control subsystem, volume 2
AU  - Griffiths, W. R.
AU  - Smirlock, M.
AU  - Aplin, J.
AU  - Fish, R. B.
AU  - Fish, D.
PY  - 1982
UR  - https://ntrs.nasa.gov/citations/19820010785
ID  - 19820010785
ER  -