Popular Science - Abril 1980

Popular Science - Abril 1980

https://books.google.pt/books?id=kY7Uj6pCZ0oC&printsec=frontcover&hl=pt-PT&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false

Popular Aviation - Janeiro 1937

Popular Aviation - Janeiro 1937

https://books.google.pt/books?id=eXMZ5hmfv_oC&printsec=frontcover&hl=pt-PT&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false

L'Aquilone - Junho 1942

L'Aquilone - Junho 1942

http://www.avia-it.com/act/biblioteca/periodici/PDF%20Modelismo/Aquilone/1942/L'Aquilone%201942%2006.pdf

New Clarion n.714 - Julho 2014

New Clarion n.714 - Julho 2014

SAM 1066 Newsletter

http://www.sam1066.org/nc0714.pdf

L'Ala - Agosto 1950

L'Ala - Agosto 1950

Revista italiana mensal de aeronáutica

http://www.avia-it.com/act/biblioteca/periodici/PDF%20Riviste/Ala/L'Ala%201950%2008.pdf

RC Soaring Digest - Janeiro 2013

RC Soaring Digest - Janeiro 2013 - publicação Web

" R/C Soaring Digest (RCSD) is a reader-written monthly publication for the R/C sailplane enthusiast and has been published since January 1984. It is dedicated to sharing technical and educational information. All material contribute must be original and not infringe upon the copyrights of others. It is the policy of RCSD to provide accurate information. "

 

http://www.rcsoaringdigest.com/pdfs/RCSD-2013/RCSD-2013-01.pdf