Books like A Geography of India
Gopal Singh
A Geography of India is 488 pages, about 8 hours 57 minutes at 250 words a minute.
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Taschenatlas Der Abgelegenen Inseln 2.6 h 
Geography 5.8 h 
History of the Armenians 7.3 h 
Following the Equator 8.9 h Bar height shows length. Estimated at 250 words a minute.