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1979-04-01 Volume 30 • 1979
Owen Gingerich
1979-04-01 Volume 30 • 1979 • 3-5
Margaret Schindler Bryant
1979-04-01 Volume 30 • 1979 • 6-12
Philip D. Jordan
1979-04-01 Volume 30 • 1979 • 13-31
1979-04-01 Volume 30 • 1979 • 32-39
Judith L. Macy