Keyword Analysis & Research: heckman et al 1997 1998

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
heckman et al 1997 1998	0.84	0.5	1059	94	23
heckman	1.4	0.8	9300	11	7
et	0.7	0.5	7092	85	2
al	0.16	0.1	2448	33	2
1997	0.55	0.1	8227	54	4
1998	0.61	0.2	8430	57	4

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

Keyword	CPC	PCC	Volume	Score
heckman et al 1997 1998	0.09	0.8	7986	12

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