Salud pública Méx- PDF Download - Art. IDS0036-36342007000800014

Salud Pública de México
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HERNANDEZ-AVILA, Juan Eugenio; TIRADO-RAMIREZ, Enrique; SANTOS-LUNA, René and REYNALES-SHIGEMATSU, Luz Myriam. Use of Geographical Information Systems for billboards and points-of-sale surveillance in two Mexico cities. Salud pública Méx [online]. 2007, vol.49, suppl.2, pp.s241-s246. ISSN 0036-3634.

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