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Table 1

References used for collecting the observed flux densities of the 57 SF regions plotted in Fig. 3.

Bains et al. (2006)
Buckley & Ward-Thompson (1996)
Conti & Crowther (2004)
Gordon (1987)
Gordon & Jewell (1987)
Hill et al. (2005)
Mooney et al. (1995)
Moore et al. (2007)
Sievers et al. (1991)
Thompson et al. (2006)
Ward-Thompson & Robson (1990)

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