Anonymous2011-08-262019-05-282011-08-262019-05-281929ÜAMF 171:61http://hdl.handle.net/10062/18412etphotographsslidesSchmidt, Bernhardoptikudastronoomidslaididfotodportreefotodportreed1920-ndad1930-ndad20. saj. 1. poolImage