http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
KITCHING,J.A.: -- Contractile Vacuoles of protozoa. With -- 20 fig. - (Wien:Springer.1956.) 45 S. -- 8° [Kopft.] -- (Protoplasmatologia.3,D,3 a.) -- 1956:2501 f.