Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
G
o
o
g
l
e
|
Forvo
|
+
Protodyakonov scale of hardness
This HTML5 player is not supported by your browser
stresses
geol.
Коэффициент крепости по шкале проф. Протодьяконова
(
schmidtd
)
Add
|
Report an error
|
Get short URL
