1.
Wind Turbine Technology: Fundamental Concepts in Wind Turbine Engineering, Second Edition
by Spera, David A.
ISBN: 9780791802601
List Price: $199.00
2.
Thermal Fatigue of Materials and Components - STP 612
by Spera, David A.
ISBN: 9780803105867
List Price: $27.00
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Wind Turbine Technology : Horizontal Axis Megawatt Wind Energy Systems
by Spera, David A.
ISBN: 9780880160438
List Price: $85.00