TY  - BOOK
AU  - 
ED  - Pontificia Universidad Católica de Puerto Rico.
TI  - Size distribution of trace metals in Ponce air particulate matter
AV  - HD4013 
PY  - 1988///
KW  - Pontificia Universidad Católica de Puerto Rico
KW  - Dissertations
KW  - Local
KW  - Metals
KW  - Trace elements
KW  - Environmental aspects
N1  - Thesis (M.S.)-Catholic University of Puerto Rico; Includes bibliografical references : p. 66-68
ER  -