• vol.39. no.1, March 1969

• vol.39. no.2, March 1969

• vol.39. no.3, April 1969

• vol.39. no.4, April 1969

• vol.39. no.5, May 1969

• vol.39. no.7, June 1969

• vol.39. no.8, July 1969

• vol.39. no.9, July 1969

• vol.39. no.10, October 1969

• vol.40. no.1, March 1970

• vol.40. no.2, March 1970

• vol.40. no.3, April 1970

• vol.40. no.4, April 1970

• vol.40. no.5, May 1970

• vol.40. no.6, May 1970

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• vol.40. no.7, June 1970

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• vol.40. no.8, June 1970

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• vol.40.no.9, July 1970

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• vol.40.no.10, July 1970

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• vol.40.no.11, July 1970

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• vol.40. no.12, August 1970

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