What does MLB stand for?

Magnetic Linear Birefringence (MCD)

Major League Baseball

Malabar - Java - Seismograph station code, US Geological Survey - Closed (SEIS)

Malolactic Bacteria - Bacteriology

Manufacturing Load Boards (MCD)

Marginal Lands Board (SAUO)

Maritime Labor Board - Terminated, 1942

Maritime Law Book Key Number Data Base - Maritime Law Book Co. Ltd. - Canada - Information service or system (CRD)

Mbule - Language symbol (ETLW)

Medallion Books Ltd. - Vancouver Stock Exchange symbol

Melbourne - Florida - Airport symbol (OAG)

Merrill Lynch & Co. - NYSE symbol (SAG)

Metallic Link Belt (AABC)

Metropolitan Toronto Library Board, Systems Unit - UTLAS symbol

Micro-Laryngobronchoscopy - Medicine (DMAA)

Middle Linebacker - Football

Millbrae, CA - Amtrak Busline code

Mini Landbridge - MARAD (TAG)

M. L. Boatworks, Warren, RI - Manufacturer code for watercraft hull identification number (USCG)

Mobile Logistics Support Base (NVT)

Monaural Loudness Balance - Audiology

Motor Lifeboat

Multilayer Board

Multiple Listing Board (BARN)

Multiple Listing Bureau (SAUO)