Terrestrial magnetism and atmospheric electricity

Mode of access: Internet.

Atmospheric electric field mill.

"Final report, contract no. DA-36-039-SC-74897."

Atmospheric electric field mill installation and operation manual.

"Contract no. DA-36-039-SC-74897."

Lightning safety awareness.

"IEMA, American Red Cross, [and] NOAA, US Department of Commerce, National Oceanic and Atmospheric Administration"