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$48Scientific American Jan 1, 1974
$48Scientific American Mar 1, 1974
$48Scientific American Feb 1, 1974
$48Scientific American Apr 1, 1974
$48Scientific American Jun 1, 1974
$48Scientific American Jul 1, 1974
$48Scientific American Aug 1, 1974
$48Scientific American Nov 1, 1974
$48Scientific American Sep 1, 1974
$48Scientific American Dec 1, 1974
$48Scientific American Jan 1, 1975
$48Scientific American Feb 1, 1975
$48Scientific American Mar 1, 1975
$48Scientific American May 1, 1975
$48Scientific American Jun 1, 1975
$48Scientific American Jul 1, 1975
$48Scientific American Sep 1, 1975
$48Scientific American Nov 1, 1975
$48Scientific American Dec 1, 1975
$48Scientific American Jan 1, 1976
$48Scientific American Feb 1, 1976
$48Scientific American Mar 1, 1976
$48Scientific American Apr 1, 1976
$48Scientific American May 1, 1976
$48Scientific American Jun 1, 1976
$48Scientific American Jul 1, 1976
$48Scientific American Aug 1, 1976
$48Scientific American Sep 1, 1976
$48Scientific American Oct 1, 1976
$48Scientific American Nov 1, 1976
$48Scientific American Dec 1, 1976
$48Scientific American Jan 1, 1977
$48Scientific American Feb 1, 1977
$48Scientific American Mar 1, 1977
$48Scientific American Apr 1, 1977
$48Scientific American May 1, 1977
$48Scientific American Jun 1, 1977
$48Scientific American Jul 1, 1977
$48Scientific American Aug 1, 1977
$48Scientific American Sep 1, 1977
$48Scientific American Oct 1, 1977
$48Scientific American Nov 1, 1977
$48Scientific American Dec 1, 1977
$48Scientific American Jan 1, 1978
$48Scientific American Feb 1, 1978
$48Scientific American Mar 1, 1978
$48Scientific American May 1, 1978
$48Scientific American Jun 1, 1978
$48Scientific American Jul 1, 1978
$42Scientific American Feb 1, 1980
$48Scientific American Aug 1, 1978
$48Scientific American Sep 1, 1978
$48Scientific American Oct 1, 1978
$123Ladies' Home Journal Jun 1, 1963
$48Scientific American Nov 1, 1978
$48Scientific American Dec 1, 1978
$48Scientific American Jan 1, 1979
$48Scientific American Feb 1, 1979
$48Scientific American Mar 1, 1979
$48Scientific American Apr 1, 1979