Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

Ankyohaisui

暗渠排水

Ankyo haisuihou

暗渠排水図

冨田式暗渠排水技術

久間村暗渠排水事業地

暗渠排水ニ関スル意見書

第一～四号壱町歩暗渠排水設計図

湿田暗渠排水の意義と効果 (上・下)

暗渠排水計画図 縮尺千弐百分ノ一

Hanyouka suiden no ankyo haisui sekkei ni kansuru kenkyuu

さあ泥と取組め 秋田の暗渠排水工事始る

暗渠設計図

暗渠排水一万二千町歩完了 : 青森の土地改良

Dangan ankyo haisui kouji no shiori : miyagiken ni okeru jissai

Ankyohaisui

Oimonochozouhou

Tsuku

Ankyohaisui

Sumiyakuhitobitohazousannihisshida

Ankyohaisui

Ankyohaisui

Ankyohaisui

Oimonochozouhou

Shouwa15nen11gatsu、kadonajirousatsuei。choushinosameryoutosamekawaseizou。「suisanhikaku」nadotoyobaretesamekawanokutsunadomoseizousareta。

Yoji

Sumiyaki.kitouson

Parupuyouzainokiridashi

Uminootometachi

Shachouwojintounihazumuboushokki

Otsukai

Suichokunichikaigansekimennoasai■■■

Kannabenotaki

Hoya

Ikuenimokasanattatsurarajoushounyuuseki

Yuuranbudouen.isawa

Bassai.kinoshuruihasugigaooi.kitouson

Tonariguminihitorihatsukurimaseu kodomotachinohoikusekininsha

Daikuushuunisonaeyou tainihimo、shoukanimo、shokuryoukakuhonimoyouihayoika