Keyword Analysis & Research: heckman et al 1997 1998

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
heckman et al 1997 1998	0.82	0.3	8227	65	23
heckman	1.52	0.2	8476	44	7
et	0.74	0.5	7058	100	2
al	0.34	0.6	6875	29	2
1997	0.61	0.5	6317	31	4
1998	1.87	0.7	9427	44	4

Keyword Research: People who searched heckman et al 1997 1998 also searched

Keyword	CPC	PCC	Volume	Score
heckman et al 1997 1998	0.74	0.8	1697	24

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