when did the b 29 enter service

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did the b 29 enter service	0.62	0.9	3551	39	31
when	1.54	1	8708	30	4
did	1.93	0.5	8500	47	3
the	0.73	0.1	2814	4	3
b	1.4	0.5	5695	73	1
29	0.4	0.7	8980	62	2
enter	1.99	0.7	6155	16	5
service	0.1	1	7891	95	7

Keyword	CPC	PCC	Volume	Score
when did the b 29 enter service	0.09	0.8	2010	41
when did the b 29 first enter service	1.47	0.7	1741	38
when was the b 29 made	0.02	0.1	6960	36
history of the b 29	1.7	0.7	8394	7
when was the b-29 created	1.11	0.4	4062	9
is the b-29 still in service	1.36	0.3	8698	60
when was the b-29 developed	0.89	0.4	9185	48
who made the b 29	0.54	0.6	6480	9
when was the b29 put in service	1.46	0.9	6140	34
when was the b 29 retired	0.11	0.2	141	99
what replaced the b 29	1.25	0.4	5926	7
history of the b 29 bomber	0.17	0.9	1638	5
was the b 29 pressurized	0.7	0.3	5260	43
b 29 doc schedule	1.56	0.6	8527	68
how many b 29 were built	1.78	0.9	3019	10
first flight of the b-29	1.72	0.5	3497	41
what is the b-29	1.99	0.2	4043	56