TY  - BOOK
AU  - Stoffel,Bernd
TI  - Assessing the energy efficiency of pumps and pump units: background and methodology 
SN  - 9780081005972
PY  - 2015///
CY  - Amsterdam, Netherlands
PB  - Elsevier
KW  - Pumping machinery
N1  - Includes bibliographical references (page 129-131) and index
ER  -