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An open notebook with a lot of writing on it. School book exercise, education.
Summary
A notebook with lots of maths written on it / A notebook with a number written on it / Work-related public domain stock photo.
Date
1960 - 1969
Source
pixabay.com
Copyright info
This image is from Pixabay and was published prior to July 2017 under the Creative Commons CC0 1.0 Universal Public Domain Dedication license https://web.archive.org/web/20161229043156/https://pixabay.com/en/service/terms/ . In July 2017, Pixabay switched the old sitewide license for all uploads from Creative Commons CC0 to a custom license arrangement that does not meet the Creative Commons CC0 1.0 Universal Public Domain Dedication license terms.
