Ryūryō yōran
Subtitle: Shōwa 5-nen yori Shōwa 12-nen ni itaru
Publisher: Denkichō
Published: 1940
Place of publication: [Tokyo]
Language: jpn
Number of pages: 449
Subjects: Stream measurements
Notes: Accompanied by One folded map in pocket and "Handbook on water flow" (3 leaves), translated by Mr. Hirasawa.

Errata slip inserted.