metrojornal.com.br
Metro Jornal publishes newspaper reporting, headlines and current-affairs coverage in Brazil.
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datacommon.mapc.org
Open-data catalog covering Boston, Massachusetts, with filters and downloadable records.
metropoles.com
Metrópoles publishes online news, reporting and current-affairs coverage in Brazil.
metnews.com
Metropolitan News-Enterprise publishes newspaper reporting, headlines and current-affairs coverage in United States.
metropotam.ro
Metropotam is a magazine publishing features, commentary and specialist editorial coverage.
mx.dk
metroxpress publishes newspaper reporting, headlines and current-affairs coverage in Denmark.
mhasweb.org
Find and access empirical social research data, with indexed datasets.
mexiconewsdaily.com
English-language publication covering Mexican politics, business, culture, travel and regional developments.
kyamagu.github.io
Mexopencv: Collection and a development kit of matlab mex functions for OpenCV library.
mfri.repo.nii.ac.jp
Digital library for searching books, documents, images and online collections.
mg-rast.org
Searchable repository for finding basic in biology and medicine datasets and dataset.
open.mgimo.ru
Searchable repository for finding economic and social history datasets and aggregated data.
mhkdr.openei.org
Dataset repository covering atmospheric, oceanography and climate, with searchable datasets.
midiario.com
Mi Diario publishes newspaper reporting, headlines and current-affairs coverage in Panama.
opendata.miamidade.gov
Browse government and civic datasets for Miami-Dade County, FL.
micelio.uca.edu.sv
Research data portal for exploring computer records, including survey data.
michigan.gov
Open-data catalog covering Michigan, United States, with filters and downloadable records.
quod.lib.umich.edu
Dataset repository covering humanities, with searchable dataset.
mel.org
U.S. state of Michigan's digital library for Michigan residents.
gis-michigan.opendata.arcgis.com
Open data portal depending on ArcGIS.
data.michigan.gov
Browse public datasets, metadata and downloadable records in an open catalog.
micromega.net
MicroMega is a magazine publishing features, commentary and specialist editorial coverage.
mage.genoscope.cns.fr
Search basic in biology and medicine data collections and supporting genomic data from FRA.
microsoft.com
Former online bibliographic database, developed by Microsoft Research, shut down in 2022.