эк. тр., амер. "специальности, связанные с менеджментом по закупкам" (раздел 162 в "Словаре названий профессий"; включает в себя 22 профессии)
See:
Dictionary of Occupational Titles, christmas-tree contractor, contract administrator, contract specialist, field contractor, field-contract technician, research-contracts supervisor, grain broker-and-market operator, buyer 4), assistant buyer, livestock commission agent, outside property agent, procurement engineer, purchasing agent, grain buyer, head tobacco buyer, clean-rice broker, procurement services manager, prize coordinator, purchase-price analyst, floor broker, securities trader, title clerk
Англо-русский экономический словарь.