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#	Keyword	Results	Change	Check Date
11	surfer filters	727 000	0	2014-04-09
18	how to make sand water filter	2 890 000	0	2014-05-25
23	convertir fichier ssf en shp	4 320 000	0	2014-03-24
29	gravity filtration design criteria	27 800 000	0	2013-10-19
31	sand filter	17 600 000	-2	2013-10-24
32	Ecosan waterless toilet system	30 200	0	2014-08-04
38	sand filters	5 940 000	4	2014-01-25
40	panama permaculture	48 600	0	2014-01-09
43	filter sands	3 560 000	0	2013-11-18
45	ibict	13 600	0	2013-10-26
48	rexresearch	35 500	0	2014-05-04
48	Filtration Sand	5 760 000	0	2014-06-16
48	without borders	34 200 000	0	2013-11-20