Ahrens, Christa books & textbook
Szymanowski: His Life and Times
Paganiniana Publications, Incorporated, Neptune, NJ, U.S.A. /1986T Hardcover
isbn-10: 0866220143 / isbn-13: 9780866220149
Dwarf Cichlids
Jorg Vierke Jörg Vierke Christa Ahrens
TFH Publications Inc /1979T Hardcover / 93 Pages
isbn-10: 0876665091 / isbn-13: 9780876665091
Cure and Recognize Aquarium Fish Diseases
Schubert, Gottfried Ahrens, Christa
TFH Publications /1974T Paperback / 127 Pages
isbn-10: 0876660332 / isbn-13: 9780876660331
