Boeing 247 (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Boeing 247" in Spanish language version.

refsWebsite

Global rank Spanish rank

2books.google.com

3^rd place

7^th place

1,290^th place

1,645^th place

340^th place

355^th place

1web.archive.org

1^st place

1^st place

1aviation-history.com

low place

low place

low place

low place

acepilots.com

"Boeing Model 247: First modern airliner." acepilots.com, 2007. Retrieved: July 26, 2009.

aviation-history.com

"Boeing Model 247- USA." The Aviation History On-Line Museum, November 19, 2004. Retrieved: July 26, 2009.

boeing.com

"Model 247 Commercial Transport." boeing.com, 2009. Retrieved: June 14, 2010.

books.google.com

van der Linden 1991, pp. xi–xii.
van der Linden 1991, p. 1.

si.edu

nasm.si.edu

"NASM Boeing 247D." Archivado el 24 de noviembre de 2007 en Wayback Machine. Wayback archive of NASM Boeing 247D, originally revised May 5, 2001. Retrieved: July 26, 2009.

web.archive.org

"NASM Boeing 247D." Archivado el 24 de noviembre de 2007 en Wayback Machine. Wayback archive of NASM Boeing 247D, originally revised May 5, 2001. Retrieved: July 26, 2009.