1.
Issledovatel'skie raboty po fizike uchenikov 7-11 klassov: Obshchie voprosy i prakticheskie ...
by Sergey Ryzhikov
ISBN: 9783659338991
List Price: $103.00
2.
Issledovanie Radiatsionnoy Stoykosti Svetodiodov
by Ryzhikov Igor', Zaytsev Sergey
ISBN: 9783659451805
List Price: $49.00