The Slovak Karst /

Regularities of karst processes : karst landscape /

Morphogenetics of karst regions : variants of karst evolution /

The Genus Turbinicarpus /

Karst Utilization in Practice /

The genus Perilestes : Odonata /

The Slovak Karst Mts. hiking map.

Karst geomorphology of Slovakia. : Typology. Map on the scale 1:500 000. /

Revision of the Genus Cryptocoryne Fischer /

Revision of the Genus Echinodorus Rich /

A Synopsis of the Genus Arachis /

Cave-dwelling pseudoscorpions of the Dinario karst /

Das Genus : ein Beitrag zur Didaktik des DaF- Unterrichts /

The three investigators. 4, The mystery of the green ghost /

The three investigators. 2, Mystery of the stuttering parrot /

The three investigators. 3, Mystery of the whispering mummy /

The three investigators. 10, The mystery of the moaning cave /

The three investigators. 8, Mystery of the silver spider /

Karyometric investigations /

Criminal investigation. /

Taxonomic investigations on the discomycetous genus Lachnellula Karst /