Look up: MG 3

1. Mg13
   The MG13 was a German light machine-gun produced from 1930 to 1935. It was chambered for the 7.92 mm Mauser cartridge which it took from a 75-round saddle drum magazine and fired at a rate of 650 rounds per minute. The MG13 went into service with the German army, but was withdrawn when the MG34 beca...
   Found on http://www.probertencyclopaedia.com/brow
   
   
2. Mg3
   The MG3 is a German general purpose machine-gun being the earlier MG42 (MG1 or MG2) further redesigned during 1968 to accept either the German belt or NATO disintegrating link belt, and later a 150 round belt drum magazine.
   Found on http://www.probertencyclopaedia.com/brow
   
   
3. MG3
   (from the article `MG42`) ...German army after its modification in calibre; guns that had been reworked from the old to the new calibre were then called MG2, and a further ...
   Found on http://www.britannica.com/eb/a-z/m/83
   
   
4. MGCD0103
   A substance being studied in the treatment of several types of cancer. It blocks enzymes needed for cell division and may kill cancer cells. It is a type of histone deacetylase (HDAC) inhibitor. Also called mocetinostat.
   Found on http://www.cancer.gov/dictionary?expand=
   
   
5. MgCO3
   Magnesium Carbonate Molar mass: 84.3139
   Found on http://www.convertunits.com/molarmass/Ma
   
   
6. Mgr-3
   The MGR-3 (Littlejohn) was an American compact, lightweight, highly-mobile surface-to-surface guided missile designed for use against area targets, rather than precise targets. The MGR-3 could be fitted with various warheads including nuclear. Development of the MGR-3 started in 1956. The MGR-3 had a range of 16 km.
   Found on http://www.probertencyclopaedia.com/brow
   
   
7. MgSiO3
   Magnesium Silicite Molar mass: 100.3887
   Found on http://www.convertunits.com/molarmass/Ma
   
   
8. MgTiO3
   Magnesium Titanate Molar mass: 120.1702
   Found on http://www.convertunits.com/molarmass/Ma