General Electric Co., Pittsfield, MA - Library symbol - Library of Congress (LCLS)
Georgetown University, Medical Library Processing Center, Washington, DC - OCLC symbol (OCLC)
Magazine Promotion Group - Defunct (EA)
Magnetic Porous Glass - Materials science
Magnetopneumogram - Medicine
Main Professional Grade (WDAA)
Management Psychology Group - Commercial firm
Manhattan Publishing Group (EA)
Manipulating - Telegraphy (PCTE)
Marba - Language code (ETLW)
Marine and Ports Group (SAUO)
Maritime Patrol Group
Matched Power Gain
Materials and Products Group - National Institute of Standards and Technology (RCD)
Mathematics Products Group (SAUO)
Max-Planck-Gesellschaft - West German research organization
McArthur, OH - Location identifier - FAA (FAAL)
Mellco, Mashpee, MA - Manufacturer code for watercraft hull identification number (USCG)
Meridian Point Realty VII - AMEX symbol (SPSG)
Michigan Petroleum Geologists, Inc. - Commercial firm
Micrograms per Gram
Micro Power Generation - Defense Advanced Research Projects Agency (RCD)
Microwave Products Group (SAUO)
Microwave Pulse Generator
Mid Plate Gyre - Nuclear energy (NUCP)
Midwest Pirate Guild
Miles per Gallon
Military Pay Grade - Military technology (DDF)
Military Products Group
Milk Protein Hydrolysate - Biochemistry (DAVI)
Miniature Precision Gyrocompass (IEEE)
Mobile Protected Gun - Army
Mold Pressure Guard - Plastics
Molecular Presentation Graphics - Software program
Monopropylene Glycol - Chemicals
MPG Investment Corp. Ltd. - Toronto Stock Exchange symbol - Vancouver Stock Exchange symbol
Multi Channel Pulse Generator (ACAE)
Multimedia Publishers Group (EA)
Multiple Point Ground (NAKS)
Museum of Practical Geology (SAUO)
Patrologia Graeca - J. P. Migne - Paris - A publication (BJA)
Miles per Gallon
Miles per Gallon (SHCU)
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