The present book was first published in 1948 and 1949; it consisted of three separate parts (“Arbeitsmethoden der Pflanzensoziologie”, “Die Pflanzengesellschaften Mitteleuropas”, and “Angewandte Pflanzensoziologie”). In 1958 a revision of the first part was published. The first/second edition contains 338 pages, so this second/third edition has been somewhat enlarged. According to the preface the book is intended on the one hand as an introduction for those who want to specialize in vegetation study, on the other hand as a source of information on plant communities for those who are engaged in investigations in the fields of agriculture, forestry, control of the environment, nature conservancy, and in the study or the teaching of biology in general.