Ular Slobodskoy, Kasimov, Ryazan, Tyumen, Yelabuga, Tula, Kungur, Peterburgda ishlab chiqarilgan... Qadim zamonlarda Rusda ularning majmuasi "yamskoy garmoni" deb atalgan. Ularning eng mashhur ishlab chiqarish joyini ayting?