TITLE: Quantum Field Theory: completing the "A Bridge between Mathematicians and Physicists" series
QUESTION [6 upvotes]: I decided to read the series "A Bridge between Mathematicians and Physicists" written by Eberhard Zeidler. But when I read the preface of the first book I realized that at first this series should be composed of six volumes, namely: 

Quantum Field Theory I: Basics in Mathematics and Physics
Quantum Field Theory II: Quantum Electrodynamics
Quantum Field Theory III: Gauge Theory
Quantum Field Theory IV: Quantum Mathematics
Quantum Field Theory V: The Physics of the Standard Model
Quantum Field Theory VI: Quantum Gravity and String Theory

I have only the first three books. Searching for the last three I discovered that Eberhard Zeidler died and therefore the last three volumes will never be published.
For this reason I ask: could someone please indicate me books that cover the subject of the last three books and that focus a lot on the mathematical part?
Thank you for your attention.

REPLY [4 votes]: The volume number 4 has a vague title. 2 volumes of "Quantum fields and strings: a course for mathematicians" probably cover whatever that term is supposed to mean (there is also a partial QFT-mathematics dictionary in the books, very nice). The books are outdated by this point, but they should be enough to get you started (then you should be able to read physical mathematics papers without too much pain).