1937- 1964- 2003-2011 549 abbeys adventureandadventurers animals antiquities antiquités archaeology architecture arizona asónriverregion australia ben(fictitiouscharacter) bencooper(fictitiouscharacter) bill biodegradation biodiversity biodégradation brockton business causes caveanimals cavearchitecture cavepaintings caveplants caving celtic centralamerica chapterbooks chiusi cliff-dwellings collectionandpreservation collectionsetconservation congresses conservationandrestoration conservationetrestauration cooper crimelaboratories culturalproperty demand descriptionandtravel detective diane(fictitiouscharacter) dianefry(fictitiouscharacter) druidsanddruidism economics england environmentalarchaeology espeleologia etc etruria excavations(archaeology) exhibitions fiction folklore forensicanthropologists fouilles(archéologie) friendship fry fugitivesfromjustice gardens general guatemala guides guineapigs hamsters handbooks hide-and-seek history humanbody hunting ice iceland identification illustratedchildren'sbooks indiansofnorthamerica infrastructure iraqwar iren italian italy juvenilefiction kekchiindians kentucky legends local mammothcaveregion manuals manuels mayaphilosophy mayas mexico mice minerals missouri monuments mountainecology mountains mountainsinart mystery nature paleoecology paleolithicperiod pictorialworks pierre pointofpinesregion police policeprocedural policewomen prehistoric prehistoricpeoples protection reader religion religiousaspects research ritesandceremonies romans sacredspace scientists sculptureenpierre serialmurders snow socialaspects socialscience spain speleology stanislav stone stonecarving tennessee thenaturalworld thomas travelchládek umwelt vikingantiquities wales