ISSN 1986-8359 . . . Speleološko društvo "Zelena Brda", Trebinje, R. Bosna i Hercegovina. The Devon Karst Research Society, Plymouth, United Kingdom. Caudata Hungarian Cave Research, Budapest, Hungary. . . . Spelaeobiologica Bosniæ et Hercegovinæ . Monographs in Speleobiology and the Conservation-management of Karst Conduit-aquifer Ecosystems in the Dinaric Karst of Eastern Hercegovina, Bosnia & Hercegovina. . . "PROTEUS PROJECT" MONOGRAPH NO. 1. . The Vrelo "Vruljak" (Gorica) Hypogean part-Ecosystem, . AN INTERIM DESCRIPTION AND HYPOGEAN BIO-INVENTORY TOGETHER WITH AN OUTLINE OF ITS CURRENT CONSERVATION-MANAGEMENT PROBLEMS. . with Appendices. . . . . ...........Spelaeobiologica Bosniæ et Hercegovinæ...................................Vol.1. (2010)........................................................Trebinje