Ritō shinkō no genkyō to kadai
By: Yamaguchi Hirofum.
Series: Chōsa to jōhō -- dai 635-gō = -- Issue brief -- no. 635
Publisher: Chōsa oyobi Rippō Kōsakyoku
Published: 2009
Place of publication: Tōkyō
Language: jpn
Number of pages: 10