Answer: ccc

AnswerCrossword Clue
CCCX x XXX
CCC300, to Cato
CCC300, to Tiberius
CCCPoor bond rating
CCCCaesar's perfect bowling score
CCCXXX x X
CCC300 in old Rome
CCCCaesar's 300
CCCJunk bond rating
CCCLX quintupled
CCCPerfect bowling game for Caesar?
CCCCaesar's perfect bowling score?
CCCFDR innovation
CCCYear in St. Marcellinus' reign
CCCSpeculative bond rating
CCCFDR program
CCCFDR's tree-planting agcy.
CCCVI times L
CCCPerfect game at Rome Roll-a-rama?
CCCL times VI
CCCSix L's
CCCRoosevelt's "Tree Army," for short
CCCNew Deal agcy.
CCCPerfect score at Colosseum lanes?
CCCNew Deal monogram
CCCNew Deal org. concerned with natural resources
CCCThree hundos, in Roman numerals
CCCNew Deal org.
CCCOld tree-planting org.
CCCXXX times X
CCCVI x L
CCCNew Deal prog.
CCCJunk-bond rating
CCCV x LX
CCCXV x XX
CCCL x VI
CCCBrutus' 300
CCC300, to Caesar
CCCLast year of the 3rd century
CCCXII strikes?