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- Language: English
- Year: 2010

- Author: Bruce W. Eelman
- Language: English
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- Author: International Labour Office
- Language: English
- Year: 2003

- Author: Atchut P. Pednekar
- Language: English
- Year: 2009

- Author: Robert W. Price
- Language: English
- Year: 2004

- Author: David Crick
- Language: English
- Year: 2004

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- Language: English
- Year: 2005

- Author: Elisabeth Doucett, Elisabeth Doucett
- Language: English
- Year: 2015

- Author: Barbara Orser, Catherine Elliott
- Language: English
- Year: 2015