www.npga.org/public/articles/index.html?cat=7

Propane Handling for Campers & RV's
www.propanegas.ca/propane/safety.htm
  

Propane Education & Research Council
www.propanecouncil.org/index.html

www.gasco-propane.com/Files/safety.html

www.gasco-propane.com/Files/faq.html