Titlebook: Ventilatoren; Entwurf und Betrieb Bruno Eck Book 19725th edition Springer-Verlag Berlin Heidelberg 1972 Handel.Technik.Ventilator.Ventilat

不透明

外表讀作

,Conceptual Background: Firms’ Objectives, Decision Variables, and Economic Efficiency,ted to alternative characterizations of returns to scale (e.g., constant or variable returns to scale technical efficiency resulting in scale efficiency), disposability (e.g., strong and weak disposability of inputs and outputs), etc.

judicial