- E-bookOperator’S Guide to Centrifugal PumpsRobert X. Perez
- E-bookHow to Select the Right Centrifugal PumpRobert X. Perez
- E-bookOperator’S Guide to Centrifugal Pumps, Volume 2Robert X. Perez
- E-bookOperator's Guide to General Purpose Steam TurbinesRobert X. Perez
- E-bookTroubleshooting Rotating MachineryRobert X. Perez
- E-bookOperator's Guide to Process CompressorsRobert X. Perez