Image: Muhammad al karaji 01
Muhammad_al_karaji_01.jpg (695 × 421 pixels, file size: 37 KB, MIME type: image/jpeg)
Description: Diagrams from Al-Karaji's 11th Century work on qanats
Title: Muhammad al karaji 01
Credit: Schoenberg Center for Electronic Text and Imaging, University of Pennsylvania
Author: en:Al-Karaji
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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