Philmus, R. Into the Unknown. Berkeley etc.: Univ. of California Press, 1970 174 p. 0-520-04959-4.
Philmus, R. Into the Unknown. Berkeley etc.: Univ. of California Press, 1970 174 p. 0-520-04959-4.
Philmus, R. (1970) Into the Unknown, Berkeley etc.: Univ. of California Press 174 p. 0-520-04959-4.
Philmus, R. (1970). Into the Unknown. The Evolution of Science Fiction from Francis Godwin to H. G. Wells. Berkeley etc.: Univ. of California Press, 174 p.
Philmus R. Into the Unknown: The Evolution of Science Fiction from Francis Godwin to H. G. Wells. Berkeley etc.: Univ. of California Press; 1970. p. 174 p. ISBN: 0-520-04959-4.
