Mendonça, Remir Alencar, Clóvis Bôsco Mendonça Oliveira, Antonio José Silva Oliveira, and José Ferreira daSilva Jr. “Orientation for Field Activity Planning: Contributions of P. Ya.Galperin”. International Journal of Advanced Engineering Research and Science 7, no. 5 (May 21, 2020). Accessed July 3, 2024. https://journal-repository.com/index.php/ijaers/article/view/1977.