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| Preview | Issue Date | Title | Author(s) |
|---|---|---|---|
 | Sep-1970 | The National Geographic Magazine : Volume 138 : N3 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc; Scofield, John |
 | Feb-1970 | The National Geographic Magazine : Volume 137 : N2 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Jan-1970 | The National Geographic Magazine : Volume 137 : N1 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Apr-1969 | The National Geographic Magazine : Volume 135 : N4 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Oct-1969 | The National Geographic Magazine : Volume 136 : N4 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Mar-1969 | The National Geographic Magazine : Volume 135 : N3 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Jul-1969 | The National Geographic Magazine : Volume 136 : N1 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Jan-1969 | The National Geographic Magazine : Volume 135 : N1 | Grosvenor, Melbille Bell; Vosburg, Frederick G.; Grosvenor, Gilbert H.; Shor, Franc |
 | Nov-1966 | The National Geographic Magazine : Volume 130 : N5 | Grosvenor, Melbille Bell; Vosburg, Frederick G. |
 | Jun-1966 | The National Geographic Magazine : Volume 129 : N6 | Grosvenor, Melbille Bell; Vosburg, Frederick G. |