Jikan no kenkyū
By: Kaifu Norio bun ; Hara Makoto e.
Contributors: Hara, Makoto, 1929-
Series: Sansū to rika no hon -- 24
Publisher: Iwanami Shoten
Published: 1981
Place of publication: Tōkyō
Language: jpn
Number of pages: 44
Subjects: Time; Geological time; Time measurements; Juvenile literature; Clocks and watches; Space and time