Lạng Sơn qua các giai đoạn lịch sử-6

9. Pht trin kinh t - x hi giai đon 1973 - 1978
 !"
#$$%&'(")"*(+,-(."
/)0(1"23,-(.)45)+
64+! /5#"#,-(.+7!"
$"3
$8(9:;<=,4>4?9<@,!A9:;<B
5-C9! 4D(>5!"#AE!F
G4"-(.+H(>"-I69(5(J3
(6HKL..A9:;<M!N
OP,"1N3?+K7*($N
48Q.$(L9:;<RNI>,LS
TUV'R'+(%6"7,4>)45)+:BW
+(%,4>4?::XY.3
