Balashankar Kantharia - Sons of Balashankar

Hathitrust is a good source, especially because they have many copies of the Bombay University Calendar as well.

From what I remember, in Narmadashankars biography of Balashankar, it was written that of Balashankars three sons, one became a poet (like his father), one became a geologist, and the last discovered manganese-copper mines in Shivrajpur