QUANTOS REVISTA CIENTIFICA 2021 | Page 21
Fuentes
:
https
://
www
.
elfrente
.
com
.
co
/
web
/
index
.
php
?
ecsmodule
=
frmstasection
&
ida
=
57
&
idb
=
96
&
idc
=
38461
https
://
www
.
ambiteco
.
es
/
gestion-residuos-santander
.
html
https
://
www
.
vanguardia
.
com
/
area-metropolitana
/
bucaramanga
/
juez-no-dio-mas-plazo-
para-el-carrasco-el-proximo-viernes-se-debe-cerrar-XB4113617
19
QUANTOS REVISTA CIENTIFICA 2021 | Page 20
QUANTOS REVISTA CIENTIFICA 2021 | Page 22