File:Ralph Alpher (cropped).jpg

DescriptionRalph Alpher (cropped).jpg English: Ralph A. Alpher in 1950. Date 28 November 1950 Source https://link.springer.com/article/10.1007/s00016-012-0088-7

https://creativecommons.org/licenses/by-sa/4.0CC BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Brazilian Portuguese Ralph A. Alpher em 1950.