عنوان مقاله [English]
One of the concerns in the second half of the twentieth century is the issue of increase of using abbreviations and acronyms. From the natural geographic point of view, the main reason of this increase is related to international organizations such as the UN as well as inclination toward conducting multi-discipline and multi-organizational research in the framework of research groups. Unfortunately, in many books and papers the main meanings of abbreviations do not exist. Therefore, a list of abbreviations we deal with in many natural geographic sources has been presented here. Abbreviations of journals can be found in the World List of Scientific Periodicals, and a list of abbreviations of organizations is available in Buttress’s World Guide to Abbreviation of Organizations (London, Leonard Hill, fifth edition, 1975).