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Md. Code Ann., Bus. Occ. & Prof. § 6.5-401

Except as otherwise provided in this title, a person may not perform, attempt to perform, or offer to perform the functions of a stationary engineer in the State unless licensed by the Board in the appropriate grade to provide such services.

Official source: Maryland General Assembly. Reproduced from public-domain Maryland statutes; confirm against the official source for the current text. Not legal advice.