File:1957-植保系-小麦丰产田病虫害调查-山东农学院.jpg

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中文（中国大陆）：1957-植保系-小麦丰产田病虫害调查-山东农学院 照片日期精确到年
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Source 山东农业大学档案馆，山东农业大学数字校史馆（http://history.sdau.edu.cn/）
Author 山东农学院（今山东农业大学）

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Public domain
This film or image from a film is now in the public domain because its term of copyright has expired in Mainland China, Macao, and Taiwan (but not necessarily Hong Kong per warning below).

A cinematographic work, a work created by virtue of an analogous method of film production or a photographic work is copyrighted for 50 years since the first publication in Mainland China, Macao, and Taiwan according to article 23 of 3 Term of Protection for Rights Copyright Law of the People's Republic of China, Decree-Law 43/99/M of August 16, 1999 of Macao, and Article 30 of the Copyright Act of the Republic of China in effect in Taiwan.

Warning: This tag must not be used for Hong Kong films that are copyrighted there for life plus 50 years, computed from the last of the following persons with known identity to survive: (a) the principal director; (b) the author of the screenplay; (c) the author of the dialogue; or (d) the composer of music specially created for and used in the film. However, Hong Kong accepts the rule of the shorter term for non-Hong Kong works.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

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current03:47, 27 November 2020Thumbnail for version as of 03:47, 27 November 20201,258 × 1,280 (922 KB)ClayM300 (talk | contribs)Uploaded a work by 山东农学院（今山东农业大学） from 山东农业大学档案馆，山东农业大学数字校史馆（http://history.sdau.edu.cn/） with UploadWizard

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