All 4 Kalyan Kumar Roy releases on Paperback Book and Har...
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Release February 24, 2027
![Cover for Kalyan Kumar Roy · Natural Electromagnetic Fields in Pure and Applied Geophysics - Springer Geophysics (Paperback Book) [2020 edition] (2021)](https://imusic.b-cdn.net/images/item/original/991/9783030380991.jpg?kalyan-kumar-roy-2021-natural-electromagnetic-fields-in-pure-and-applied-geophysics-springer-geophysics-paperback-book&class=scaled&v=1614008105)
![Cover for Kalyan Kumar Roy · Potential Theory in Applied Geophysics (Paperback Book) [Softcover reprint of hardcover 1st ed. 2008 edition] (2010)](https://imusic.b-cdn.net/images/item/original/254/9783642091254.jpg?kalyan-kumar-roy-2010-potential-theory-in-applied-geophysics-paperback-book&class=scaled&v=1408470996)
![Cover for Kalyan Kumar Roy · Potential Theory in Applied Geophysics (Hardcover Book) [2008 edition] (2007)](https://imusic.b-cdn.net/images/item/original/898/9783540720898.jpg?kalyan-kumar-roy-2007-potential-theory-in-applied-geophysics-hardcover-book&class=scaled&v=1574458112)