norma nº 121/1981

dr{uf .e/i dJ c& e,,7-4r -e(
Ctcha)
l-1.1 v ity'* l/c,-ff' -r c/,'t
, 9.r^t ri Cd-r.(rr- . i\ ii iarr, ailtrr(
i(,t:tticVi.r:-( I
)u,.( ctr .rq.r?i. lrhrLr dc eoy/q.,r,-/^f* "r,..,
4;arr,ailtrr( c,t ,J-tt;-*:,:.' o-t ..o:tl J
Ziu,fu,<"
- fuf 3: - (icrtr< ,.Ee Ly fl11.rl& \ c{-\ fi1F6,ai6.1ai) g,, 7-p.tt4'-
-.X i,O ,
u{!in),-l-c l'i'c{tdo y'/uttic^1'''"( ek W\t', eu otd .,z-
^J
. lltl ,v: - ila Li a*,/=cl d-LZ,
*.-,r-^-.111,3r-e[{.bc.eoh- .
,//iu:., ct?-a-/ 
, 
.tu-7a=r;ro.J.:. a
,'Veuorrtl-t l/tozet?c, clr
.lE' \ 
'
\1 .
4.2 eE'7 lla . c{-cLIL\ (Lt
,7
J- ruh Lc,. -.1, 4i.,.'',, -T-r,rgiir
;,. l.r ,cZ /q)'/
cla
&elarducCe .k', -.eLct tt,/ r:4'
, .t \ /^ #' yu ! ./.t t'/r'l
' rl,(, .,,6 E,,cclu to,v.(i7ttt 7..c. Oamada df-s,u,;a t.-o
g.tQas 
4r "&i, cft:r.<ia j./ a(/
- 0. Durlzrt t4r,r*^c"1"o-[ "4 Jo17n,/", {r-Gc/o -c0 {i,n-i,(,,t",,f,
,t< eL<z / +c t< ..{ 472{Laz{L 7lli, t.-'r:|az/' .dt lL,tror*tzl n7r,r.r*r,
-? ,(c( .rat(((ikLt, cz - 1,rff-ti."6 ,lt-r':
l,r' .,-'-vc,
cU li)dru.r'-tin-E^<pf
T