Total Economic Value of Natural Capital - A Case Study of Piatra Craiului National Park - POPA, Bogdan; COMAN, Claudiu; BORZ, Stelian A.; NITA, Dan M.; CODREANU, Codrin; IGNEA, Gheorghe; MARINESCU, Viorel; IORAS, Florin; IONESCU, Ovidiu (University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 2013)