TY  - BOOK
AU  - Egorov, N. S.
ED  - International congress on environmental education and training
TI  - Ecological education in the USSR
PY  - 1987///
CY  - Μ.
PB  - Univ. press
KW  - Экологическое образование
KW  - СССР
KW  - nlr_sh1
KW  - Ч486.45
KW  - rubbk
KW  - Ч426.45
ER  -