TY - GEN PB - Verlag der Sternwarte CY - Bergedorf L2 - http://ww.bibliotekacyfrowa.pl/Content/111994 PY - 1936 KW - Bergedorf lexicon KW - proper motion of stars KW - the northern hemisphere UR - http://ww.bibliotekacyfrowa.pl/dlibra/publication/edition/111994 ER -