TY  - GEN
AU  - Valdés,L M
TI  - [Not Available]
SN  - 0185-0148
PY  - 1983///0715
KW  - Demography
KW  - History, Modern 1601-
KW  - Mexico
KW  - Statistics as Topic
KW  - history
N1  - Publication Type: English Abstract; Historical Article; Journal Article
ER  -