Hakaddish by Rabbi David Assaf.
This book is an authoritative guide covering every aspect of one of the most famous prayers in the siddur: Kaddish. Included is a very comprehensive anthology of useful (and sometimes unusual) laws of Kaddish, with sections on: Yahrzeit, Death, burial and mourning, Who should recite Kaddish, Answering Amen correctly, and much more. This is the ideal book for everyone wanting to know more about Kaddish. In Hebrew only.
Dimensions: 6.5" X 9.25"