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Scientific American 1970's

1970 January, February, March, April, May, June, July, August, September, October, November, December	1971 January, February, March, April, May, June, July, August, September, October, November, December	1972 January, February, March, April, May, June, July, August, September, October, November, December
1973 January, February, March, April, May, June, July, August, September, October, November, December	1974 January, February, March, April, May, June, July, August, September, October, November, December	1975 January, February, March, April, May, June, July, August, September, October, November, December
1976 January, February, March, April, May, June, July, August, September, October, November, December	1977 January, February, March, April, May, June, July, August, September, October, November, December	1978 January, February, March, April, May, June, July, August, September, October, November, December
1979 January, February, March, April, May, June, July, August, September, October, November, December