when was the first encyclopedia written

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the first encyclopedia written	1.13	0.2	2359	88	39
when	1.43	0.6	8732	59	4
was	0.76	0.7	4023	40	3
the	0.24	0.6	3540	75	3
first	0.57	0.8	7302	100	5
encyclopedia	1.42	1	8591	23	12
written	0.31	0.9	857	46	7

Keyword	CPC	PCC	Volume	Score
when was the first encyclopedia written	1.36	0.1	7319	35
what was the first encyclopedia	1.18	0.6	2018	61
who published the first encyclopedia	1.58	0.9	1460	77
when was the encyclopedia created	0.16	0.4	2560	53
when was the encyclopedia published	0.07	0.3	1929	10
who made the first encyclopedia	1.96	0.7	7369	31
what was the first encyclopedia called	0.79	0.2	8815	61
who created the first encyclopedia	0.02	0.2	7991	14
when was world history encyclopedia published	1.6	0.8	2523	93
creator of the first encyclopedia	1.33	0.4	6881	45
history of the encyclopedia	1.01	0.7	729	62
when were encyclopedias invented	1.6	0.7	6254	18
when was encyclopedia.com made	1.32	0.5	2809	1
who invented the encyclopedia	0.97	0.2	882	93
who wrote the encyclopedia	1.96	1	4167	29
where was world history encyclopedia created	1.24	0.3	4028	97
the free encyclopedia history	1.39	0.9	4250	28