Lu, Y. (1997). Theoretical and experimental studies of a long stroke pumping unit with an auto-mechanical reverse mechanism and a sliding counterweight. Oulun yliopisto.
Citación estilo ChicagoLu, Yi. Theoretical and Experimental Studies of a Long Stroke Pumping Unit with an Auto-mechanical Reverse Mechanism and a Sliding Counterweight. Oulu: Oulun yliopisto, 1997.
Cita MLALu, Yi. Theoretical and Experimental Studies of a Long Stroke Pumping Unit with an Auto-mechanical Reverse Mechanism and a Sliding Counterweight. Oulun yliopisto, 1997.
Warning: These citations may not always be 100% accurate.