Were you able to find the right Providers within google-adsense ? If you're also a provider of google-adsense and you're not featured in the business directory yet, you can always Add an entry for free.
The results list for google-adsense in Columbia. You can find the best google-adsense vendors and providers in Columbia in the Columbia Business Directory. Currently there is no company is registered in the Columbia business directory under google-adsense.