Alles van: Jan Schilt
Resultaat 1 - 2 (van 2)
Jan Schilt On a thermo-electric method of measuring photographic magnitudes
Engels | Hoitsema, Groningen | 1924
E-book
J. Schilt The frequency of a component of the linear velocity for stars brighter than 5m.8 of spectral types F, G, K and M, derived from the proper motions of Boss' Catalogue
Engels | 35 pagina's | Hoitsema, Groningen | 1923
E-book