DOI Data Dictionary, 2015-03-23

iso3166a2:MA	MT	Morocco.
Manifestation	MT	A perceivable Creation that is a realization of an Abstraction.
MarriagePartner	MT	An Individual who is married to another Individual.
iso3166a2:MC	MT	Monaco.
iso3166a2:MD	MT	Moldova.
iso3166a2:ME	MT	Montenegro.
MedicalCaseReport	MT	A Report on a medical case.
Member	MT	A Party which is a member of an Organization.
iso3166a2:MF	MT	Saint Martin.
iso3166a2:MG	MT	Madagascar.
iso3166a2:MH	MT	The Marshall Islands.
iso3166a2:MK	MT	Macedonia.
iso3166a2:ML	MT	Mali.
iso3166a2:MM	MT	Myanmar.
iso3166a2:MN	MT	Mongolia.
iso3166a2:MO	MT	Macao.
doiavs:mode	MT	Allowed values for sensory modes with which a Creation is intended to be perceived.
MovingImage	MT	A moving Image.
iso3166a2:MP	MT	Northern Mariana Islands.
iso3166a2:MQ	MT	Martinique.
iso3166a2:MR	MT	Mauritania.
iso3166a2:MS	MT	Montserrat.
iso3166a2:MT	MT	Malta.
iso3166a2:MU	MT	Mauritius.
Music	MT	A Creation whose content is expressed in musical notes.
MUZE	MT	A MUZE Identifier, an 8-character identifier for music songs in the MUZE database now maintained by Rovi.
iso3166a2:MV	MT	Maldives.
iso3166a2:MW	MT	Malawi.
iso3166a2:MX	MT	Mexico.
iso3166a2:MY	MT	Malaysia.
iso3166a2:MZ	MT	Mozambique.