13.-0986. Most probable number - ( MPN ).

Watsan matters
13.-0985. Monitoring.
13.-0984. Monitoring & Evaluation - ( M & E ).
13.-0983. Molen carbonate fuel cell - ( MCFC ).
13.-0982. Moisture control.
13.-0981. Modular incinerator.
13.-0980. Mixed liquour suspended solids - ( MLSS ).
13.-0979. Mixed flow pump.
13.-0978. Mitigation.
13.-0977. Mining.
13.-0976. Mining water use.
13.-0975. Minimum standards in humanitarian response - ( SPHERE ).
13.-0974. Mineral water.
13.-0973. Micropollutant.
13.-0972. Microorganism.
13.-0971. Microfranchising.
13.-0970. Microfinance.
13.-0969. Microfiltration - ( MF ).
13.-0968. Microcatchment.
13.-0967. Microbial fuel cell.
13.-0966. Microbes.
13.-0965. Microbasin.
13.-0964. Micropollutants.
13.-0963. Microenterprise.
13.-0962. Methylene blue active substances - ( MBAS ).
13.-0961. Methanogenesis.
13.-0960. Methane.
13.-0959. Methaemoglobinaemia - infantile cyanosis.
13.-0958. Metamorphic.
13.-0957. Metamorphic rock.