I did a google search for this "wim becker" and it seems that he is the author of a work of gay pulp fiction called "growing up hard" in 1973
believe it or not, this book is located in the cornell library! oh how standards have fallen!

http://rmc.library.cornell.edu/EAD/h.../RMM07456.html

by the way, if you ever need to locate ANY work of fiction, ask me, as i have library connections.