Chapters by Dr. Marcela Varona

• Book Chapter Exposure to Pesticides in Tomato Crop Farmers in Merced, Colombia: Effects on Health and the Environment
  by Marcela Varona Uribe, Sonia Mireya Díaz, Andrés Monroy, Edwin Barbosa, Martha Isabel Páez and René A. Castro in the book "Pesticides - Recent Trends in Pesticide Residue Assay" edited by R.P. Soundararajan, ISBN 978-953-51-0681-4, InTech, August 8, 2012
• Book Chapter Exposure Factors to Organophosphate and Carbamates Pesticides in the Putumayo Department, 2006
  by Varona Marcela, Díaz Sonia, Henao Gloria, Lancheros Angélica, Murcia Alix, Morato Rocío, Morales Ligia, Revelo Dyva and de Segurado Patricia in the book "Pesticides - The Impacts of Pesticides Exposure" edited by Margarita Stoytcheva, ISBN 978-953-307-531-0, InTech, January 1, 2011