TY  - RPRT
TI  - Noncontaminating technique for making holes in existing process systems
AU  - Hecker, T. P.
AU  - Czapor, H. P.
AU  - Giordano, S. M.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19720000384
ID  - 19720000384
ER  -