\input zb-basic
\input zb-matheduc
\iteman{ZMATH 1980x.00475}
\itemau{Anon.}
\itemti{Elements of mathematics. Book 1. Introductory logic. Elemente der Mathematik. Buch 1. Einfuehrung in die Logik.}
\itemso{St. Louis, MO: CEMREL, Inc. 1976. 190 p. Ser. Title: Comprehensive school mathematics program.}
\itemab

\itemrv{~}
\itemcc{E44 U23 U24}
\itemut{School Books; Lower Secondary; Upper Secondary; Gymnasium; Geniuses; Gifted; Verbale Intelligenz; Mathematical Language; Propositional Logic; Grundlagen Mathematik; ; Schulbuch; Sekundarstufe 1; Sekundarstufe 2; Gymnasium; Hochbegabter; Begabung; Verbale Intelligenz; Mathematische Sprache; Aussagenlogik; Grundlagen Mathematik}
\itemli{}
\end