TY  - BOOK
AU  - Mercury Press
TI  - The magazine of fantasy and science fiction
PY  - 1973///
CY  - Cornwall, Conn.
PB  - Mercury Press
KW  - Science fiction
N1  - Title on cover : special Frederik Pohl issue featuring "In the problem pit," a new novella by Frederik Pohl; Title on cover Isaac Asimov, "Signs of the times"
ER  -