when did leeuwenhoek discovered animalcules

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did leeuwenhoek discovered animalcules	1.02	0.4	879	70	43
when	1.28	0.6	4457	82	4
did	0.83	0.1	8928	16	3
leeuwenhoek	0.88	0.9	1114	60	11
discovered	0.73	0.5	3962	19	10
animalcules	1.35	0.5	9076	20	11

Keyword	CPC	PCC	Volume	Score
when did leeuwenhoek discovered animalcules	0.7	0.1	7107	75
what did leeuwenhoek discovered	1.18	0.3	9247	85
when did anton van leeuwenhoek discover	1.47	0.1	6164	90
when did antonie van leeuwenhoek discover	0.41	0.8	9086	33
what anton van leeuwenhoek discovered	0.01	0.3	5957	52
what year did anton van leeuwenhoek discover	1.87	0.6	3031	39
what did anton von leeuwenhoek discover	0.7	0.2	3296	9
what antony van leeuwenhoek discovered	1.41	0.1	2026	77
what did leeuwenhoek discover	1.24	0.3	2258	96
what did anton leeuwenhoek discover	0.12	1	1462	50
what two discoveries did leeuwenhoek make	0.11	0.7	7857	73
antonie van leeuwenhoek discovered	1.05	0.2	380	39
what did antoni van leeuwenhoek discover	0.02	0.3	743	93
when anton van leeuwenhoek discovery	0.62	0.3	5203	70
what did van leeuwenhoek discover	0.23	0.7	1833	56
what did leeuwenhoek discover in his research	1.02	1	3032	65
what is animalcules for leeuwenhoek	1.2	0.6	2531	61
what did anthony van leeuwenhoek discover	0.85	1	6625	96
discovery of anton van leeuwenhoek	1.95	0.8	4513	94
anton van leeuwenhoek discovery date	1.18	0.3	6578	17