NÚMERO 30 | VOLUMEN 4 |
OCTUBRE 1968 |
THE MAGNETIC FIELD REVERSAL
AS A COROLLARY TO A MECHANISM OF THE ORIGIN OF SPIRAL STRUCTURE Paris Pishmish PDF (2.2 Mb) |
229 |
INTERSTELLARMOLECULAR LINES IN A STARS Manuel Peimbert PDF (3.6 Mb) |
233 |
SPECTROPHOTOMETRY OF THE ORION NEBULA. II. THE ABUNDANCE OF ELEMENTS Manuel E. Méndez PDF (3.0 Mb) |
240 |
DIRECT DESIGN SOLUTION FOR
CASSEGRAIN SHIELDS Alejandro Cornejo and Daniel Malacara PDF (2.3 Mb) |
246 |
A FINDING LIST OF STARS OF SPECTRAL TYPE A7 AND EARLIER IN REGIONS AT HIGH GALACTIC LATITUDES. II. SOUTH GALACTIC POLE A. G.Davis Philip and Nicholas Sanduleak PDF (4.7 Mb) |
253 |