Journal of the British Astronomical Association. Vol.80 Iss.4
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- 76Front page Vol.80 No.4
- 130THE PROBLEM OF THE ROTATION OF VENUS
- 80Session 1969-1970
- 83MEETING OF THE ASSOCIATION: 1970 Mar 25
- 85MEETING OF THE ASSOCIATION: 1970 Apr 29
- 90THE LUNAR CONTROVERSY—IV
- 97TWO ECONOMICAL TRANSISTOR INVERTER CIRCUITS FOR SPEED CONTROL OF SYNCHRONOUS MOTOR CLOCK DRIVES
- 109MUTUAL OCCULTATIONS OF PLANETS
- 115ON THE PHASE ANOMALY OF THE INNER PLANETS
- 120THE PHASE ANOMALY OF MERCURY AND VENUS
- 123OVERLAPPING SUNSPOTS
- 126RECENT THEORIES ON THE ORIGIN OF THE PLANETS
- 167CONTENTS
- 133MEMORIAL TO THE HERSCHEL FAMILY
- 131A COMET AND METEORS IN THE EARLY SIXTEENTH CENTURY
- 134SOLAR SECTION
- 140METEOR SECTION
- 140ARTIFICIAL SATELLITE SECTION
- 140THE FIREBALL AND METEORITE OF 1969 APRIL 25
- 150RADIO ASTRONOMY SECTION
- 152LETTER TO THE EDITOR
- 154NOTES FROM OTHER JOURNALS
- 155BOOK REVIEWS
- 160NEW MEMBERS ELECTED, 1970 March 25
- 161NEW MEMBERS ELECTED, 1970 April 29
- 166OFFICERS AND COUNCIL