11. Chemical weathering : the principal agent is percolating rainwater charged with carbon dioxide from the atmosphere. 12. In the absence of a naval escort, the Principal Agent was in charge of the convoy. 13. Her principal agent in Dallas County, the district attorney's office, never ceases to amaze and bewilder me. 14. Negotiation success is reciprocally related to the amount and degree of trust between the principal agent and audience. 15. Sometimes, agent handling is done indirectly, through " principal agents " that serve as proxies for case officers. 16. The barony had been established by Walter L'espec, one of his principal agents of government in Northern England. 17. In 1832, Beverly was made the principal agent , through not a member of the General Conference that year. 18. Preferring avoidance to confrontation on most issues, O'Keeffe was the principal agent of collusion in their union ." 19. "You are and must be the principal agents of your own personal and national history, " he said. 20. They are considered the principal agents in the Suai Church Massacre, which occurred a week after the referendum.
