Please contact the publisher for availability of back issues.
Reprints of individual articles, reprints of out-of-print issues, and microfilms of back volumes are available from:
- University Microfilms International, 300 North Zeeb Road, Ann Arbor, MI 48106.
- Back issues from 1969 are available online to participating libraries and institutions via JSTOR.
- Back volumes from 1969 through 1987 in reprint edition may be obtained from:
- Schmidt Periodicals GmbH, Ortsteil Dettendorf, D-83075 Bad Feilnbach, Germany.