Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ
îðèãèíàëüíîãî äîêóìåíòà
: http://www.astronomy.com/magazine/erika-rix/2013/05/on-the-trail-of-dark-nebulae
Äàòà èçìåíåíèÿ: Unknown Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 12:05:11 2016 Êîäèðîâêà: ISO8859-5 Ïîèñêîâûå ñëîâà: cygnus |