ACTA CARSOLOGICA 35/2 – 2006 174 REPORTS - POROč ILA ESSENTIAL SOURCES IN CAVE SCIENCE Graham S. Proudlove, e ditor e ssential Sources In Cave Science. A Guide to the Literature of Cave Sci- ence Cave Studies Series 16, 56 pp, A4, BCRA 2006 ISBN: 0-900-265-31-0 In the time when all information are at the tip of our fingers, an issue like this seems to be unnecessary. On the other hand, even an experienced scientist will find prob- lems looking for the relevant sources out of the Google hits. Not to mention a caver, interested to a science re- lated to his/her free time activity. An issue, where people from the forefront of a scientific area guide the reader through the essential literature is most welcome. And this is exactly what this booklet does. The science related to caves is broken down into 13 areas covered by one or more authors as follows: Geology by Dave Lowe, Geo- morphology by Tony w altham, Hydrology and Hydro- geology by Chris Groves, Chemistry by Simon Bottrell, Physics by David Gibson, Clark Friend, Phil Murphy & Tony w altham, Speleogenesis by Dave Lowe, minerals and Speleothems by Charlie Self, Paleoenvironments by Andy Baker, biology by Graham Proudlove, bats by John Altringham, Archeology and Paleontology by An- drew Chamberlain, Conservation and management by Graham Price, Speleology by Ric Hallivel. Each area is introduced with a brief - half to one page - description of what it does, its history and the present state-of-the art. A list of selected printed refer- ences follows, which normally include several tens of entries. These are up-to-date, sources include journal articles, monographs, book chapters from edited books, conference proceedings etc. A few lines of description is added to each entry and a tag G or B is given, denot- ing whether the source is of general interest or related to Great Britain and Ireland. Three sources from the list are outlined to be most essential „for those seeking the quickest possible introduction“. The list of printed sources is (not always) followed by the list of web based resources, which has - for obvious reasons - no ambitions to be complete. Last but not least is he list of periodicals publishing cave science. From my own experience I know that many read- ers will miss some entries, particularly in the area where one is actively involved. Probably this is exactly the area which you shouldn’t look for. Franci Gabrovšek