William Benjamin Gregory: Полный список книг

William Benjamin Gregory: список всех книг (2)

Mechanical Tests of Pumps and Pumping Plants Used for Irrigation and Drainage in Louisiana in 1905 and 1906 - William Benjamin Gregory

Mechanical Tests of Pumps and Pumping Plants Used for Irrigation and Drainage in Louisiana in 1905 and 1906

William Benjamin Gregory

Cost of Pumping From Wells for the Irrigation of Rice in Louisiana and Arkansas - Floyd Wesley Lambertson, William Benjamin Gregory

Cost of Pumping From Wells for the Irrigation of Rice in Louisiana and Arkansas

Floyd Wesley Lambertson, William Benjamin Gregory

2018