ODONATOLOGICAL ABSTRACTS will cover the World literature in such a way, that each issue will bring a bibliography as complete as possible of papers that have appeared between two issues of ODONATOLOGICA, i.e. in three months. Exception was made for the first two issues which deal with the 1971 publications. In each issue the bibliography is arranged alphabetically, according to the first author, while the abstracts are numbered consecutively within each volume. The last issue of a volume includes an Author and a Subject Index.