Harald Velneri üliõpilasaastad
Gross, Ilmar
Harald-Adam Velner - insener ja veeteadlane
1993
/
lk. 8-10
https://www.ester.ee/record=b1053756*est
Student years
Gross, Ilmar
Harald-Adam Velner - engineer and scientist
1994
/
p. 9-11
https://www.ester.ee/record=b1053757*est