0122-8706

0122-8706

S0122-87062020000201298

10.21930/rcta.vol21_num2_art:1298

Ecuador

Ecuador

Ecuador

Colombia

Ecuador

Ecuador

30 05 2020

30 05 2020

21 2

2014 87 1046 1046

2018 29 1 1

169-79

2017 5 1 1

169-75

2018 30 3 3

6-13

2017

2017 18 2 2

1-8

Association of Official Analytical Chemists 2000 17 Ed.

2016 7 3 3

321-39

2010 52 1 1

13-8

2015 47 4 4

360-7

2014 8 1 1

21-9

2019 30 2 2

682-90

2017 15 2 2

84-92

2017 15 2 2

93-100

2011 35 1 1

298-307

2015 17 2 2

247-54

2016 48 2 2

199-207

2016 44

2013 24 1 1

32-7

Google Earth

1984 43 4 4

1136-42

1971 23

586-602

2011 53 12 12

13-6

2014 61 3 3

270-83

2015 55 14 14

55-62

2019 6 9 9

668-79

2018 4 7 7

38-42

2014

2015 5.ª ed.

2013

220-32

2017 28 4 4

894-903

2017 12

19-28

2012 14 4 4

233-304

2018 10 1 1

86-97

2018 7 1 1

31-44

2011

2016 221

87-100

2010

2015 18 1 1

137-46

2019 76

1-9

1963 46 5 5

829-35

2013 9

39-47

2017 13 12 12

24-38