Marinus of Tyre was a Hellenized Phoenician geographer and cartographer. He wrote as an orientalist, geographer and ethnologist. Another was the Persian mathematician, astronomer, astrologer and geographer Al Khwarizmi. The Roman poet Lucan and the Greek astronomer and geographer Ptolemy gave their precise locations. Strabo, who died about AD 23, was a geographer and historian. This established his reputation as a geographer and explorer. He was a Persian geographer and bureaucrat of the 9th century. It was called by the 2nd-century geographer Ptolemy. Lusatian tribes are noted in the mid-9th-century work of the Bavarian Geographer. Ptolemy relied on the work of an earlier geographer, Marinos of Tyre. Another ancient geographer, Strabo, viewed Elam and Susiana as two different geographical regions. Accumulation by dispossession is a concept presented by the Marxist geographer David Harvey. The geographer closest to AD 100 is perhaps Ptolemy. This name was given after the noted Russian geographer Alexander Kruber. According to the ancient geographer Strabo the Knossians colonized the city of Brundisium in Italy.