This set of six German language pocket books from 1977 contains a wealth of information on a variety of topics including crystals, architecture, butterflies, meadow flowers, gardening, stones, and minerals. The books are part of the Hallwag Taschenbuch series and are perfect for young adults and adults who are interested in reference guides. The books are hardcover and feature illustrations, making them a great addition to any gardening or reference guide collection. The author, Walter Rytz, provides a comprehensive overview of the topics covered in the books. These vintage pocket books are a must-have for anyone interested in the natural world and gardening.
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