This bilingual book was designed to bear witness to 70 years of joint research and work. It presents the numerous collaborations in multiple scientific fields: volcanology, oceanography, human and social sciences, health, environment and agriculture, information and communication sciences and technologies, energy and engineering.Each chapter includes an editorial, a testimony and a focus highlighting the key figures of these collaborations. A general introduction also traces the history of Franco-Indonesian relations, from the 16th century to the present day.