What does SPMA stand for?

Rio Maranon - Peru - ICAO location identifier (ICLI)

Scottish Modern Pentathlon Association (BUAC)

Sewage Plant Manufacturers' Association - British (BI)

Shoe Pattern Manufacturers Association - Defunct (EA)

Society for Post-Medieval Archaeology - British

Soda Pulp Manufacturers Association - Defunct (EA)

Southwest Parks and Monuments Association (EA)

Spinal Progressive Muscular Atrophy - Medicine (AAMN)

Sterilization Packaging Materials Association (BUAC)

String Polling Multiple Access (PDAA)

Sump Pump Manufacturers Association - Later, SSPMA (EA)