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Text this: Productivity differences between organic and other vegetable farming systems in northern Thailand

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            _____      _____   __   __    _____   
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 |    \\   | ||__     \___ \\   \ ` //  / //---`' 
 | [] ||   | ||__     /    //    | ||   \ \\___   
 |  __//   |_____||  /____//     |_||    \_____|| 
 |_|`-`    `-----`  `-----`      `-`'     `----`  
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