TY  - BOOK
AU  - Hawkins,R.R.
TI  - Scientific, medical, and technical books: published in The United States of America : Second suplement books published 1949-1952
PY  - 1953///
CY  - Washington
PB  - The National Research Council
KW  - Bibliografía
KW  - Estados Unidos
KW  - Bibliog
ER  -