RC Soaring Digest - Maio 2015 - 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. "
Este número apresenta um artigo de um português que voa planadores nas dunas de Ofir, a norte do Porto.
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