what are the major sources of economy?
Its main revenue source is the dairy industry.
Hamilton, New Zealand
Hamilton's main revenue source is the dairy industry, due to its location in the centre of New Zealand's largest dairying area.

who sang now you're just somebody that i used to know Kimbra when was its release? In Australia and New Zealand on 5 July 2011. who produced it? UNANSWERABLE where did the recording take place? UNANSWERABLE what response was received from the critics? Writing for Digital Spy, Lewis Corner described it as "a Bon Iver-styled ballad for the music-buying masses". where was the singer born? Hamilton, New Zealand is the place known in any other name? Māori can you tell me about its climate? It is oceanic.
wiki:8255824
Hamilton, New Zealand [SEP] Economy
Manufacturing and retail are also important to the local economy, as is the provision of health services through the Waikato Hospital. The city is home to New Zealand's largest aircraft manufacturer, Pacific Aerospace, which manufactured its 1,000th aircraft in August 2009, and previously Micro Aviation NZ which manufactured and exported high-quality microlight aircraft. It also has its largest concentration of trailer-boat manufacturers such as Buccaneer. Hamilton is also the home of Gallagher Group Ltd, a manufacturer and exporter of electric fencing and security systems. Employing 600 people Gallagher has been doing business in Hamilton since 1938. Hamilton is also home to Vickers Aircraft Company, a startup aircraft manufacturer making a carbon fibre amphibious aircraft called the Wave.