Recommended books for learning tactical/combinational play?

Is there a book similar to "My System" but for tactical/combinational play?  

Some explanation:

Firstly, I am not asking about tactical puzzle books.  There are many of those, some good, some not so good.  But, I already know some that are good.

Secondly, I am also not asking about books that discuss specific combinational motifs.  For that, I think that "How to Beat Your Dad In Chess" does a great job showing the different combinational motifs.

What I am looking for is a book that discusses general principles of tactical/combinational play such as sacrifices and targeting weak squares.  I think that Vukovic's "Art of Attack in Chess" somewhat fits this description, but I was wondering if there are other, perhaps better books to read on tactical/combinational play.

Predator at the Chessboard.

Chess Tactics from Scratch.

Better books for that than Art of Attack in Chess? Maybe on Mars....

what do you mean by 'better'? Predator at the chessboard, which is online for free at something like chesstactics.org or something like that, describes the conditions for elementary tactics. I don't believe it goes into combinations, but I'm too much of a beginner to understand the difference between studying tactics and studying combinations anyway. I'm still studying elementary tactics. 

If you like Vukovic's Art of Attack...which is considered a pretty advanced book, why do you want something better? and what do you mean by better. there are books with very hard tactics in them. I don't know if these would qualify as combinations, or if they are tactcis with positional moves needed to set them up, etc. 

I'm interested to read what others will post. If the Op is not looking for Farnsworth ot Weteschnik, i.e. explanations of the conditions, and if he's not looking for Vukovic, which, frankly, I don't have any idea what Vukovic contains, it will be interesting to read what the OP is looking for. 

You might want to check out Dan Heisman's article "The Seeds of Tactical Destruction".

http://www.chesscafe.com/text/heisman05.pdf

There's also an expanded version of the article in Heisman's book Back to Basics: Tactics.

http://www.amazon.com/Back-Basics-Tactics-ChessCafe-Chess/dp/1888690348/ref=tmm_pap_title_0

Another book that might interest you is Tune Your Chess Tactics Antenna by Emmanuel Neiman.

http://www.amazon.com/Tune-Your-Chess-Tactics-Antenna/dp/9056914049

Explaining what I meant by "better":

I think that Vukovic's "Art of Attack in Chess" is great.  To rephrase my original question: What I want to know is, after reading Vukovic's "Art of Attack in Chess," what would logically be the next book that one would read on tactical/combinational play?  Preferably, that book should be more advanced than Vukovic in that it should elaborate on and expand on Vukovic's ideas.

• Anthology of Chess Combinations - Matanovic
• Chess Combinations of the World Champions - Tangborn
• Combination Challenge - Hays and Hall
• John Nunn's Chess Puzzle Book - Nunn - each problem checked by computer. - Excellent but very difficult.
• Sharpen Your Tactics - Lein and Archangelsky
• Blunders and Brilliancies - Mullen and Moss - The chapter on positions where masters resigned where they were not losing is worth the price alone!
• Tactical Chess Training - Shamkovich and Cartier
• Tactical Targets in Chess - Vol I - Pongo
• Test Your Chess IQ, First Challenge - Livshitz

Aagaard's series.  But don't bother till you're an IM or better.

Vukovic's also wrote a book on chess sacrifices did you know?

http://www.chess.com/forum/view/chess-equipment/the-chess-sacrifice-by-vladmir-vukovic

Thanks.  I didn't know he wrote a book on sacrifices.  I'll check it out.