Axiom is  a general purpose Computer Algebra system. It is useful for research and development of mathematical algorithms. It defines a strongly typed, mathematically correct type hierarchy. It has a programming language and a built-in compiler.
Polybutylene is simply a type of plumbing material that was manufactured between the late 70's and early 90's. It is thought that it was installed in over 6 million homes during that time period.
Thread: phobia of plumbing. i am new here... I have an odd fear of plumbing, not all plumbing just some thngs. i fear the thought of under ground pipes and large water tanks. I have no problems with swimming pools, i have fear of the plumbing that filters them. I have no problems with rain gutters, i have problems with storm drains.