Visi 2 David L Ferguson izlaidumi pie Paperback Book un H...
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![Cover for David L Ferguson · Advanced Educational Technologies for Mathematics and Science - Nato ASI Subseries F: (Paperback Book) [Softcover reprint of the original 1st ed. 1993 edition] (2010)](https://imusic.b-cdn.net/images/item/original/521/9783642081521.jpg?david-l-ferguson-2010-advanced-educational-technologies-for-mathematics-and-science-nato-asi-subseries-f-paperback-book&class=scaled&v=1487280191)
![Cover for David L Ferguson · Advanced Educational Technologies for Mathematics and Science - Nato ASI Subseries F: (Hardcover Book) [1993 edition] (1993)](https://imusic.b-cdn.net/images/item/original/314/9783540565314.jpg?david-l-ferguson-1993-advanced-educational-technologies-for-mathematics-and-science-nato-asi-subseries-f-hardcover-book&class=scaled&v=1521034690)