Since 1977, it has been published monthly with six issues per volume.

The regular issues began to be published the next year, in 1964, with four issues each year.

The journal has been published since 1949, normally with two issues a year.

The newspaper was first published on 1 December 1971, with three weekly issues.

It was established in 1958 and is published by Elsevier, with 15 issues per year.

It was published online with three issues a year.

It was founded in 1969 and published every Wednesday with 50 issues per year.

The comics have been published once every one or two years, with three issues available as of July 2006.

The Advocate is now published bi-monthly with 6 issues per year.

The original series was published by subscription with five issues being released each month.