In his obituary (JSALL 2019; 6(2): 327–345), Velizar Sadovski writes:
"The whole almost Sisyphean work on this enterprise amounted to more than 30 years, in which Chlodwig Werba managed to finish the first volume of his Verba IndoArica – Radices primariae (#6) – in January 1997; the book appeared in December of the same year. The second volume, dedicated to the secondary roots, took its pre-print shape literally in the month before his death [...]" (p. 331)
"It is thanks to the outstanding emotional and scholarly engagement of Dr. Ursula Werba that we
now possess the full manuscript of Volume II of his Verba IndoArica, comprising a dictionary and scholarly analysis of the secondary roots of Sanskrit, in a shape which her husband, already afflicted by his fatal disease, had been correcting and discussing with her up to the last month before his death. It is the pleasant duty of the writer of these lines, who already acted as editor of the first volume, Radices primariae (#6), to work alongside Dr. Ursula Werba towards the completion of the
editorial process of this masterwork of erudition in rebus Sanscriticis. The posthumous volume II will be submitted for print to the Austrian Academy of Sciences Press, who had also published Verba IndoArica I." (p. 336).
It may therefore be most expedient to contact V. Sadovski directly in this matter.
Regards,
WS