I have noted the following in certain Australian WW1 archives listing expended artillery munitions over a given period. Documents are Army Service Corps sourced and relate I believe to replenishment in either field or Siege/heavy Artillery. The various listed quantities are listed under these acronyms: A, AX, BX, BSK, D, DX, DPS, K, KX etc. etc. Can someone enlighten me as to the meaning of same please. Cheers....Rod