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R (2)
R (3)
R (4)
R (5)
r (1)
r (2)
r (3)
R.A.
r.a.m.
R and R
R & B
R.C.
r-colour
R & D
R/D
R.E.
r.f.
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r.a.m.
r.a.m.


abbr 
Definition:
 
relative atomic mass
Encarta® World English Dictionary [World English Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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