TY  - RPRT
TI  - A search for hard X-rays from extragalactic objects.
AU  - Laros, J. G.
AU  - Matteson, J. L.
AU  - Pelling, R. M.
PY  - 1973
UR  - https://ntrs.nasa.gov/citations/19730036351
ID  - 19730036351
ER  -