Ėkho-signaly ot uprugikh obʺektov
By: U. K. Nigul ... [et al.].
Contributors: Nigul, U. K.; Küberneetika Instituut (Eesti NSV Teaduste Akadeemia)
Publisher: [s. n.]
Published: 1900
Place of publication: Tallin
Language: rus
Subjects: Echo.; Elastic solids.
Other titles: Echo-signals from elastic objects.
Notes: Includes bibliographies.
At head of title: Akademii͡a︡ nauk Ėstonskoĭ SSR.  Institut kibernetiki.
In Cyrillic characters.
Added t. p.: Echo-signals from elastic objects.
Table of contents also in English.