1) Initials on a parcel 2) Like many a reply env 3) Like some pkgs 4) Not cod 5) Not requiring COD 6) Opposite of COD 7) Parallel presence detect 8) Shipping letters 9) Stamp not reqd 10) Stamp not required 11) Stamp on some pkgs 12) Without a bal Found on https://www.crosswordclues.com/clue/ppd
(from the article `small arm`) After the war, Vasily Degtyarev of the Soviet Union incorporated Schmeisser`s principles into his own designs, culminating in the Pistolet Pulemyot ... Found on http://www.britannica.com/eb/a-z/p/104
(= purified protein derivative) Protein purified from the culture supernatant of tubercle bacteria ( Mycobacterium tuberculosis <29>S and used as a test antigen in Heaf and Mantoux tests.
Found on http://www.encyclo.co.uk/visitor-contributions.php