First results obtained with the double pass solar spectograph at the Jungfraujoch Switzerland - Delbouille, Luc; Neven, Lucien; Roland, Ginette ([Bruxelles : Robert Louis, 1963)
Keywords: astrofyzika; astronomie; sluneční aktivita; spektrometrie; astronomy; astrophysics; solar activity; spectrometry; odborné časopisy; separáty; professional journals; offprints