Columbia subject headings:
Cohen, Marshall H. (Marshall Harris), 1926-
Superluminal radio sources (Astronomy)--Congresses.
Harvard subject headings:
Cohen, Marshall H. (Marshall Harris), 1926-
Superluminal radio sources (Astronomy)--Congresses.
Princeton subject headings:
Cohen, Marshall H. (Marshall Harris), 1926-
Superluminal radio sources (Astronomy)--Congresses.