Self Harm: Rare Types. Rare types of medical conditions and diseases in related medical categories: Brain & Neurological Disorders: Rare Types: Adult ADHD -- Rare Types. ADHD -- Rare Types. Alzheimer Disease -- Rare Types. Migraine -- Rare Types. Concentration Disorders -- Rare Types.
Public works (or internal improvements historically in the United States) are a broad category of infrastructure projects, financed and constructed by the government, for recreational, employment, and health and safety uses in the greater community.
A public sewer system is a pipe that goes from your house down the street and eventually ends up at a water treatment plant many miles away. There is also another system that uses fans and aerators to process the waste.