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Non-euclidean geometry : a critical and historical study of its developments / by Roberto Bonola ; authorized English translation with additional appendices by H.S. Carslaw ; with introduction by Federigo Enriques ; with a supplement containing the George Bruce Halsted translations of the science of absolute space by John Bolyai, the theory of parallels by Nicholas lobachevski.
- 516.9 B719 1955
- Bonola, Roberto, 1874-1911.
- Dover Publications, Inc.,
- 1955.
- New york :
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Areas Amazônicas de Mato Grosso, Goiás e Maranhao / Marilia Galvao e Roberto Galvao.
- 878.4
- Superintendência do plano de valorizaçao econômica da Amazônia (SPVEA). Setor de coordenaçao e divulgaçao,
- 1955.
- Belém, Para :