If more than 70% of a page is an image, OCR it. 
If more than 70% of a page is an image, OCR it. 
smmbllsm/aleph,smmbllsm/aleph,OpenGazettes/aleph,alephdata/aleph,pudo/aleph,alephdata/aleph,OpenGazettes/aleph,alephdata/aleph,gazeti/aleph,OpenGazettes/aleph,OpenGazettes/aleph,alephdata/aleph,pudo/aleph,gazeti/aleph,smmbllsm/aleph,gazeti/aleph,pudo/aleph,gazeti/aleph,alephdata/aleph