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Type	Originator	Title	Date
	Wildlife Trust of South and West Wales WTSWW	Breconshire Birds Annual Report 2017 Vol 7 No 2 WTSWW	2018
	Drew. D	Karst of Ireland	2018
	Mattes. J, Christian. E & Plan. L (eds)	Proceedings of the 12th Eurospeleo Forum, Ebensee, Austria	2018
	Lewis,M.J.T & Denton,J.H	Rhoysdd Slate Quarry	2018
	Lord,I	Rich Mountains of Lead	2018
	Gillett. J	Sixty Years of Caves and Caving	2018
	Author	Slojame	2018
	Speleoloskog Kluba Zeljeznicar Zagreb	Speleolog	2018
	Tihi,T.K	Zaustavljeno Vrijeme	2018