© Svetoslav Nikolov. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Citation:
Nikolov S (2018) Ecosystem services and their valuation – brief review. Journal of the Bulgarian Geographical Society 39: 51-54. https://doi.org/10.3897/jbgs.2018.39.9 |