Publication of yearbooks Magnetische und meteorologische Beobachtungen zu Prag was started by Karl Kreil in 1839 and continued by his successors until 1917. The yearbooks contain tables of variation observations (magnetic and meteorological), reports on absolute magnetic measurements and discussion to their conversion to physical units. In the first volumes also observations of vegetation were included (development of sprouts, leafs, flowers, etc.).
Printed yearbooks are deposited at the Library of the Czech Academy of Sciences. Electronic copies were provided by the Institute of Geophysics and are
