Marketer means any person who purchases or handles or sells milk produced or received by him or by another marketer from producers; provided, that any person who sells or moves into the marketing area as route disposition fluid milk products obtained from sources other than producers or pool plants shall be deemed to be a marketer with respect to such sales or movements.
N.Y. Comp. Codes R. & Regs. Tit. 1 § 21.9