Gustaf Dalén
18691937
Swedish Nobel Laureate and industrialist who invented automatic regulators for lighthouses and buoys, significantly improving maritime safety
4 ទំព័រវិញ្ញាណក្ខន្ធ បានរកឃើញ
មើលទាំងអស់ក្នុង Lives ជាមួយតម្រងដែលបានអនុវត្ត18691938
British princess who became Queen consort of Norway from 1905 to 1938, strengthening the newly independent nation's monarchy