50% hemolytic dose
50 INT spindle
50-ohm Coaxial
50 Ori
50-series tooling
50-taper machine
50-taper tooling
50 taper tool presetter
50th
50% tolerance dose
51
51 Boo
52
5250 emulator
5250 terminal emulation
5.25 Floppy
52P/Harrington-Abell
53
53 Aql
53 Cyg
53 Persei stars
53 Toukaidou stages
53 UMa
54
543 years before Christ
5-4-9 schedule
5-4/9 schedule
54/Cermak
54-foot sailing catamaran
54 Peg
54 Tau
54 UMa
55
555-1212
55 Cet
55-channel transceiver
5+5 Dialogue on Migration in the Western Mediterranean
55P/Tempel-Tuttle
55th
56
56K Data
56K Digital
56k Modem Patch
56K Voice
56P/Slaughter-Burnham
57
570 gross-ton
57 And
57 Ari
5,7-dichloro-8-hydroxyquinoline
English