Subaku kasetsu ni kansuru shiken seiseki (dai ichi)
Subtitle: Results of an experiment in nest-box building
Published: 1939
Place of publication: Japan
Language: jpn
Number of pages: 39
Subjects: Nest building; Nests; Birds
Other titles: Results of an experiment in nest-box building.; Result of an investigation in nest box setting.
Notes: Text is in Japanese.