BASIC TYPES OF ENVIRONMENTAL SCIENTIFIC RESEARCH AND EDUCATION FACILITIES FOR PROTECTED NATURAL AREAS - PDF (Russian)
Copyright (c) 2020 VAVILOVA T.Y., KOMAROVA P.S.
![Creative Commons License](http://licensebuttons.net/l/by-nc-nd/4.0/88x31.png)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.