Markgraf Member Aug 11, 2014 #1 Dear Gentlemen! I want to ask a little help: somebody can tell me a written publication (book, article etc.) about Oskar Heinecke and his parachutes? I know the most of the on-line sources. Thanks in advance! M
Dear Gentlemen! I want to ask a little help: somebody can tell me a written publication (book, article etc.) about Oskar Heinecke and his parachutes? I know the most of the on-line sources. Thanks in advance! M
