Original sentence: Some recent geographical works refer to the southernmost section of the Tenasserim Hills in the isthmus as the "Phuket mountain range"
Edited sentence: Some recent geographical works refer to the southernmost sections of the Tenasserim Hills in the isthmus as the "Phuket mountain range" and the "Nakhon Si Thammarat mountain range".These names are not found, however, in classical geographic works