@BOOK{ Book!D - 99863031,
AUTHOR = "Wittgenstein, Ludwig",
TITLE = "Prototractatus: an early version of tractatus logico-philosophicus.",
LIBRARY= "کتابخانه، مرکز اسناد و مدارک علمی پژوهشگاه حوزه و دانشگاه",
SUBJECT = "، Logic, Symbolic And Mathematical,، Language and languaes - Philosophy",
URL = "/book/99863031/Prototractatus-an-early-version-of-tractatus-logi/"}