TY  - RPRT
TI  - [Program-oriented approach to the study of major problems].
AU  - A F Serenko
AU  - G A Novgorodtsev
AU  - M L Polonskii
AU  - G Z Demchenkova
PY  - 1977
UR  - https://pubmed.ncbi.nlm.nih.gov/868235/
ID  - 868235
ER  -