http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Planetary and proto-planetary nebulae; from IRAS to ISO
proceedings of the Frascati workshop 1986, Vulcano Island, September 8-12, 1986
Proto-planetary nebulae--from IRAS to ISO
Astrophysics and space science library ; v. 135