@article{ref1, title="Avenues and dangerous cross-roads in the Federal District", journal="Salud publica de Mexico", year="1969", author="Olivares Urbina, C.", volume="11", number="3", pages="343-348", abstract="

[Abstract unavailable]

Language: es

", language="es", issn="0036-3634", doi="", url="http://dx.doi.org/" }