How terribly disappointing to find this is only a one sided map with little to no detail about the small towns. Definitely a waste of money.
Waterproof detailed map of Chiapas and Oaxaca (Mexico) published by ITMB. This map also includes a detailed street plan of Oaxaca. Index of cities. Roads and terrain mapping. Scale 1 : 1,000,000.ISBN: 9781553415930