- Marshes
Use Wetlands - Martial law
Use Military law - Mas
Use Carnivals - Masquerade
Use Carnivals - Mass media education
Use Multimedia instruction - Materia medica
Use Pharmacology - Materials science
Use Materials engineering - Materials technology
Use Materials engineering - Maternal and child welfare
Use Maternal welfare - Maternal and infant welfare
Use Child welfare and/or Maternal welfare - Maternal health services
Use Maternity services - Maternity leave
Use Leave - Maternity nursing
Use Midwifery - Maternity services (NHS)
Use Maternity services - Mathematical programming
Use Linear programming - Mathematical sciences
Use Mathematics - Mathematical statistics
Use Statistical mathematics - Mausolea
Use Tombs - Measles mumps rubella vaccine
Use MMR vaccine - Measurement systems
Use Metrology - Measures and weights
Use Metrology - Measuring
Use Measurement - Meat and livestock industries
Use Livestock industry and/or Meat trade - Meat industry and trade
Use Meat trade - Mechanical drawing
Use Technical drawing