HSR 18 (1993)

For 1993, the following issues are freely accessible:

HSR-Volume 18.4 (1993). Mixed Issue
HSR-Volume 18.3 (1993). Mixed Issue
HSR-Volume 18.2 (1993). Special Issue: Homage to Erwin K. Scheuch
HSR-Volume 18.1 (1993). Mixed Issue