http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
GIFFORD,Sanford R[obinson]: -- A Textbook of ophthalmology.Ill.(Repr.) -- Philadelphia,London:Saunders 1939.492 S.8° -- 1946:446/gb. -- Br.