The closing ceremony and announcement of the 31st I.R. Iran's World Book Award winners was held on Saturday, July 8, in Rudaki Hall, Tehran.

The translation of the book "Aquafeed Formulation" (Author: Sergio F Nates), by Dr. Ebrahim Sotoudeh, Faculty of Fisheries Department of the Persian Gulf University, was introduced as a meritorious work in the subject of applied sciences/agricultural engineering department.

The book was published in 1401 in Persian Gulf University Press.