Alexander von Humboldt
17691859
Prussian geographer, naturalist, and explorer who co-founded modern geography and pioneered biogeography and geophysical measurement
২ স্মারক পাওয়া গেছে
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ফিল্টার প্রয়োগ করে জীবনে সব দেখুন18051859
German mathematician who pioneered analytic number theory, advanced Fourier series, and provided the modern definition of a function
