Magnus, P. D., <br/><br/>
forall x :  an introduction to formal logic / 
P. D. Magnus. 
 - version 1.29 [120106]. 
 - 1 online resource. 
<br/><br/> This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.  This bibliographic record is available under the Creative Commons CC0 "No Rights Reserved" license. 
<br/><br/> "forall x is an open access introductory textbook in formal logic. It covers translation, proofs, and formal semantics for sentential and predicate logic."--BCcampus website. 
<br/><br/><label>Source: </label> BCOpenCampus  CostFree  FormOnline  AccessOpen 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic--Textbooks.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>BC71  / M34 2012