Gumma-ken kochi jigyōshi
Publisher: Gumma-ken Tochi Kairyō Jigyō Dantai Rengōkai
Published: 1970
Place of publication: Maebashi
Language: jpn
Number of pages: 485
Subjects: Agriculture -- Japan -- Gumma (Prefecture); Reclamation of land -- Japan -- Gumma (Prefecture)