19-20-21
ESQUEMAS DE LINEAS - AÑO 1970
| INDICE | LINEAS 1-2-3 | ||
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| LINEAS 4-5 | LINEAS 13-6 | LINEAS 7-8A-8B | LINEAS 9-11-16 19-20-21 |
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| LINEAS 27-28-29 | LINEAS 30-31-40 | LINEAS 41-60-61 | LINEAS 62-70-71-72 |
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| LINEAS ESPECIALES | |||
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