1. Riga hydroelectric power plant—25 Years: Provision for safe operation of water-development works and hydromechanical equipment

   • M. F. Rogal’
   • V. A. Zolotarev
   • V. I. Shcherbina

   Experimental Operation of Hydrodevelopments Pages: 677 - 682

2. Operating experienced with the Pavlovo hydroelectric power plant

   • A. I. Afinogenova
   • S. A. Dmitrieva
   • B. I. Mozhaev

   OriginalPaper Pages: 683 - 690

3. Examination of technical solutions adopted for the repair and reconstruction of equipment at hydroelectric and pumped-storage power plants

   • V. K. Polushkin

   OriginalPaper Pages: 691 - 694

4. Assessment and role of risk in dam building

   • É. S. Kalustyan

   OriginalPaper Pages: 695 - 699

5. Irgana hydroelectric power plant: Natural conditions, layout, and status of construction

   • L. N. Desfonteines
   • A. A. Neikovskii
   • B. N. Yurkevich

   OriginalPaper Pages: 700 - 706