HeinOnline index title: Law on petroleum, 7 January 1915.
1 online resource (4 pages).
World constitutions illustrated.
"This translation is based on the Spanish text provided by the National Juridical Order of the Secretariat of Government of Mexico: //www.ordenjudidico.gob.mx [consulted June 2011]."--Title page verso. Extracted from: World constitutions illustrated / edited by Jefri Jay Ruchti. Buffalo, New York : William S. Hein, 2014.
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Description based on PDF title page, viewed September 5, 2014.