00513naa#a2200181#i#450# EN\\bibl\2099 20241130135211.6 2073-0462 20140907b2014####ek#y0engy0150####ca RUS RU INSURANCE CONTRIBUTIONS: CALCULATION AND PAYMENT PROCEDURE Journal article Kazan Kazan state agrarian University 2014 4 с. Journal article local Nikiforova Olga Mukhametzyanov Kamil naukaru.ru