Index of /document/1st Step   Name Size   Parent Directory -   6th-astro-olympiad-88-11-1.pdf 592K   6th.astro-olympiad-questions.pdf 2.0M   7th-1389-90/ -   Questions.pdf 415K   ansewer key (by 3rdioaa).pdf 51K   azmayeshi(step 1).pdf 202K   problems.pdf 270K   step 1(questinos & answers).pdf 1.4M   step 1.pdf 163K