Bibliography

Rod & Ken Preston-Mafham: Cacti
the Illustrated Dictionary.
W.Hubert Earle: Cacti of the Southwest.
Terry Hewitt: The Complete Book of Cacti & Succulent
Walther Haage: Das Praktishe Kakteenbuch.
Herman Jacobsen: Das Sukkulent Lexikon.(German)
Lino diMartino: Echinocereus.(Special Issue)
Cullmann, Gotz& Groner: The Encyclopedia of Cacti
Jan Riha, Rudolf Subik: Encyklopedie Kaktusu.(Czech)
C.Innes, C.Glass: The Illustrated Encyclopedia of Cacti.
Fleischer- Schutz: Pestovani Kaktusu(Czech)
Sajeva, Costanzo: Succulents the Illustrated Dictionary.
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