return receipt requested (used in registered mail).


Read Also:

  • Rrs

    An early definition of Scheme. Revised in R2RS. [“The Revised Report on Scheme”, G.L. Steele et al, AI Memo 452, MIT, Jan 1978]. (1994-10-28) [Was the original “Report on Scheme” published?] RRS Radiation Research Society

  • Rrsp

    abbreviation (in Canada) 1. Registered Retirement Savings Plan

  • RRT

    1. rail rapid transit. 1. registered respiratory therapist. RRT Registered Respiratory Therapist

  • R.R.T.

    1. registered respiratory therapist.

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