| [2] | Contents. |
| 3-10 | The behaviour of the polarization of polydisperse interplanetary cloud. Vanýsek, V. |
| 11-23 | Profiles of some craters from ranger lunar photographs. Bouška, J. |
| 25-[27] | Diameter-depth relationship of craters on Mars. Bouška, J. |
| 29-39 | Observations of comets at the Kleť observatory in the year 1969. Mrkos, A. |
| 41-43 | Surges in cometary brightness and observational errors. Bouška, J. |
| 45-47 | Total solar eclipse of March 7, 1970, and the form of the solar corona. Bouška, J. |
| 49-50 | Transit of Mercury of May 9, 1970. Bouška, J. |
| 51-76 | Tables of the brillouin function. Zajac, Štefan; Valenta, L. |
| 77-106 | The kinematic and dynamic properties of seismic waves in the neighbourhood of caustics. Zahradník, J. |