The pages of the U.N.O. Endangered Species content are made of colored and illustrated sheets of extra heavy paper (200 grs.). On all pages the frames where you can place the stamps are indicated, usually with a picture of the stamps itself. On all these frames there are transparent mounts to safely place your stamps .
The content U.N.O. Endangered Species part I contains the years 1993 till 2021.
The content consists of 32 pages;
Titelvel, info, 1993-2015;2016:1-2;2017;2018;2019;2020;2021.