http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"This book incorporates material previously published in The first home-school catalogue (1982, 1986) and The home-school challenge (1985), here extensively revised and expanded, and constitutes in part a third edition of The first home-school catalogue."--Verso Title page.