Plastmassid ja pakendiprobleem
author
statement of authorship
P. Lageda
source
date
12. dets.
year of publication
pages
lk. [?]
TTÜ department
language
eesti
Lageda, P. Plastmassid ja pakendiprobleem // Rahva Hääl (1968) 12. dets., lk. [?]. https://www.ester.ee/record=b1072826*est