Meaning of the Sanskrit Word: dhruvasya

  dhruvasya—of Dhruva Maharaja    SB 4.12.44, SB 4.13.6, SB 4.21.28, SB 4.21.29, SB 4.21.28-29
  dhruvasya—of Dhruva    SB 4.12.48, SB 4.12.52, SB 6.6.12
  dhruvasya—of Maharaja Dhruva    SB 4.13.1

Can't find any compound Sanskrit words containing dhruvasya.