In 1972 the district became together with GÃ 1\/4 nzburg ( district ) and the urban district GÃ 1\/4 nzburg , the GÃ 1\/4 nzburg district in todays form . In 1972 the district was merged with GÃ 1\/4 nzburg ( district ) and the urban district GÃ 1\/4 nzburg to GÃ 1\/4 nzburg district in todays borders .