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Books about Ayasabur:
Takeda Ayasabur by Lambert M Surhone (Feb 27, 2011)
Wiki information Ayasabur:
Takeda Ayasaburō, was a Japanese Rangaku scholar, and the architect of the fortress of Goryōkaku in Hokkaidō. Takeda was born in the Ōzu Domain in 1827. He studied medicine, Western sciences, navigation, military architecture. He was a student of...