Notes: January issue. Date signed for printing ("podpisano k pechati"): 4 January 1972.
Notes: November-December issue. Date signed for printing ("podpisano k pechati"): 11 November 1993.
Notes: Date signed for printing ("podpisano k pechati").
Notes: Date signed for printing ("podpisano k pechati"). Origin of ants, pp. 175-234.
Notes: Date signed for printing ("podpisano k pechati"). Origin of ants, pp. 204-266.