Thank you very much for your answer. However, this link offers this title: "Juedisches Leben in Kreuznach", Also very interesting book
My research concerns this title:"Jüdische Familien In Kreuznach, Vom 18.Jahrundert bis zum Ersten Weltkrieg"
by the same author, published in the same year.
This last title offers a very detailed record of the registers of birth, death and marriage of Kreuznach for the Jewish populations.
Thanks again for this help