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National Geographic Magazine [computer file] 1940s (vol. LXXVII, no. 1) Jan. 1940-April 1943, May 1943-August 1946, September 1946-December 1949
Gepubliceerd in 1888Electronic Resource -
192
National Geographic Magazine [computer file] The 1950s (vol. CXVI, no. 5, November 1959)1950-April 1953, May 1953-August 1956, September 1956-December 1959
Gepubliceerd in 1888Electronic Resource -
193
National Geographic Magazine [computer file] The 1960s (vol. 136, no. 6, December 1969) Jan. 1960-April 1963, May 1963-August 1966, September 1966-December 1969
Gepubliceerd in 1888Electronic Resource -
194
National Geographic Magazine [computer file] The 1970s (vol. 155, no. 4, April 1979) Jan. 1970-April 1973, May 1973-August 1976, September 1976-December 1979
Gepubliceerd in 1888Electronic Resource -
195
National Geographic Magazine [computer file) The 1980s (vol. 167, no. 6, June 1985) Jan. 1980-April 1983, May 1983-August 1986, September 1986-December 1989.
Gepubliceerd in 1888Electronic Resource -
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