Gakunen-shi, Shonen Gonen-sei, January 1961 issue. Published by Shogakukan. 262 pages in total. Includes "Mystery of the Dark Nebula" by Shigeru Komatsuzaki, 15 pages (illustrations). Listed in Mr. Komatsuzaki's list as being published in Gakunen-shi, so it may be rare. Cover, back cover, and spine: Scuffs, dullness. Age-related yellowing. Spine has tears and peeling at the bottom edge. Top, bottom, and side edges: Age-related yellowing. Several pages have missing parts in the margins and tears. One page (P196) is 2/3 missing. The test application coupon on P245 is cut out. I have checked it roughly, but there may be oversights in the details, so please forgive me if there are any. Please purchase only if you understand that this is a used item from a bygone era. Please note that we do not ship overseas.