17 acres ancestrol agricultural property is there in my mothers name. My father and mother both died. Just before the death of my mother, I my self, my brother and my mother each have 1/3rd share in this property. My 4 sisters got married before 1980 and therefore they have no share at that time. My mother died in the year 1993 without will. Now the law has changed and sisters married before 1980 have also right in the property. Now what is my share. Is it 1/3rd+1/6th share from my mother's share or 1/6th from the entire property. Please advise.