Dear Tzipporah,

I don't have a directory for Slovakia from 1944.
The closest I can get are the following:

• The 1938 lists of doctors in Czechoslovakia which has a MUDr. Ladislav Kemeny listed as a dentist (stomatolog).
• The 1940 telephone book for Slovakia also lists him with his practice's street address as Zochova 3.

Of course, something might have changed in the ensuing four years.

I also can't find a Zochova Street in Zvolen today. So, either it was destroyed or renamed.

I hope that helps.

Rick Pinard, Prague