Walter J. Spielberger presents the Panzer IV and all of its variants in 168 pages and over 200 photographs.[AuthorName]By Walter J. Spielberger[/AuthorName][AuthorBio][/AuthorBio][NumIllustration]over 200 photographs[/NumIllustration][CoAuthor][/CoAuthor][SubTitle][/SubTitle][ColorPattern]over 200 photographs[/ColorPattern]