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Keywords from Image Description:
Maximum Benefit from the Knowledge of Circles of Projection on the Degree Northern Latitude WDL. Artwork ru fr Abu alasan Al ibn Abd alRamn ibn Amad ibn Ynus alMir en Abu alasan Al ibn Abd alRamn ibn Amad ibn Ynus alMir zh Abu alasan Al ibn Abd alRamn ibn Amad ibn Ynus alMir pt Abu alasan Al ibn Abd alRamn ibn Amad ibn