UDC 621.1 Heat engines in general steam power steam engines UDC 621.22 water power hydraulic energy BS 1000 (621.1/22) 1979
B S I
UDC 621.1 Heat engines in general
steam power steam engines UDC 621.22 water power hydraulic energy BS 1000 (621.1/22) 1979 B S I - - London B S I 1979
025.43 UDC/BSI/16
UDC 621.1 Heat engines in general
steam power steam engines UDC 621.22 water power hydraulic energy BS 1000 (621.1/22) 1979 B S I - - London B S I 1979
025.43 UDC/BSI/16