| Today, they form large deposits of white chalky material, which is mined for use in cleansers, paints, filtering agents, and abrasives. |
| The management of depression has advanced greatly with the development of antidepressant agents based on neurotransmitter reuptake inhibition. |
| The refusal to bulk in wagonloads and to hire forwarding agents aggravated delays in the delivery of goods as well as station congestion. |
| Intelligence gathered by human agents was vital to attaining the first goal. |
| We recently heard that absorbable hemostatic agents intended to be left in patients have been recalled by the US Food and Drug Administration. |
| Parliament must have been aware of these methods and cannot have had in mind a process where abortifacient agents were administered by nurses. |
