... CLOUDS, CORES, AND LOW MASS STARS: The Fourth Haystack Observatory Conference . ... THE FIRST SYMPOSIUM ON THE INFRARED CIRRUS AND DIFFUSE INTERSTELLAR CLOUDS . ... Vol. CS-33 . ISBN 0-937707-52-X . REVEALING THE MOLECULAR UNIVERSE: . ...
... PMCs are sometimes known as Noctilucent Clouds (NLCs) or "night shinning" clouds because of their visibility during or just before and after twilight. ...