Chapter Relations Office 
Contract Research Organization 
Chemical Release Observation 
Cross 
Crossland 
Cathode Ray Oscilloscope 
CATHODE-RAY OSCILLOGRAPH 
Contract Research Organisation 
Control Room Operator 
Central Records Office 
Central Region Office 
Company Registration Office 
Complete with Related Order 
Congressional Relations Officer 
Criminal Records Office 
Crisis Response Operation 
Crisis Response Operations 
Calcium Ruthenium Oxide 
Cancel Rerouted Overflow 
Cancelling Returns Only 
Card Replacement Order 
Cave Rescue Organisation 
ceftriaxone 
Central Radio Office 
Centre de Recherche Océanographique 
Centre de Recherches Océanologiques 
Certification Requirements Owner 
Certified Revenue Officer 
Change of Rating Official 
Change of Reporting Official