Search for tag: "heat and air-conditioning installation"

Thumbnail for entry Principles of Water Quality

12:01

Principles of Water Quality

Principles of Water Quality

Principles of Water Quality

Principles of Water Quality

plumbing
heat and air-conditioning installation
chemistry
solvents
principles of water quality
water supply; sewerage
waste management and remediation activities
water supply and sewerage
hm839
quality of drinking water
drinking water
chemicals
tap water
oil (fossil fuel)
fertilisers
electricity
gas
steam
air conditioning and water supply
waste
bacteria
From  pblhlth Program in Public Health 13 plays 0  
Thumbnail for entry HM839WaterQualitySanitationandHealth

17:36

HM839WaterQualitySanitationandHealth

HM839WaterQualitySanitationandHealth

HM839WaterQualitySanitationandHealth

plumbing
heat and air-conditioning installation
energy & resources
developing nations
business
utilities (industry)
water supply; sewerage
waste management and remediation activities
electrical
plumbing and other construction installation activities
villages
dry toilet
water supply and sewerage
hm839
utilities
captioned
electricity
gas
steam
air conditioning and water supply
rural area
composting toilet
From  pblhlth Program in Public Health 14 plays 0