Lillian Schwartz, a graphic consultant at the School of Visual Arts in New York, claims that the image is a self-portrait of Leonardo, which was made using a crude photographic technique.

纽约视觉艺术学院的图像顾问莉莲·施瓦茨断言，这幅画作是达·芬奇的自画像，它是用简陋的摄影技术制成的。

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He has been the consultant-editor for several books about animals, including The Encyclopedia of Animals: A Complete Visual Guide, published by the University of California Press.

此外，他还曾担任有关动物方面的一些书籍的编辑顾问，其中包括加利福尼亚大学出版社出版的《动物百科全景指南》。

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Ruben Canlas, Web Information Systems Consultant at the Asian Development Bank, Belina Capul, President of the South East Asia Pacific Audio Visual Archives Association (SEAPAVAA) and Ray Edmonson, Director of Archive Associates, Australia and a UNESCO Memory of the World Committee Member.

UNESCO: Education