On significant applications of geophysical methods : proceedings of the 1st springer conference of the Arabian Journal of Geosciences (CAJG-1), Tunisia 2018. IEREK Interdisciplinary Series for Sustainable Development. Eds. Narasimman Sundarajan, Mehdi Eshag, Hakim Saibi, Mustapha Meghraoui, Mansour Al-Garni, Bernard Giroux. Cham, Switzerland : Springer, 2019. 190 p. ISBN 978-3-030-01655-5. ISSN 2522-8714