Paramita Punwong. 2007. Pollen deposit in Bangkok clay from Ong Kharak District, Nakhon Nayok Province, and their implication on paleophytogeography. Field of Study Botany, Chulalongkorn University;
Paramita Punwong. (2007) Pollen deposit in Bangkok clay from Ong Kharak District, Nakhon Nayok Province, and their implication on paleophytogeography . Chulalongkorn University/Bangkok.
Paramita Punwong. Pollen deposit in Bangkok clay from Ong Kharak District, Nakhon Nayok Province, and their implication on paleophytogeography. . Bangkok:Chulalongkorn University, 2007.
Paramita Punwong. (2007) Pollen deposit in Bangkok clay from Ong Kharak District, Nakhon Nayok Province, and their implication on paleophytogeography . Chulalongkorn University/Bangkok.