Columbia subject headings:
Galʹperin, Petr I︠A︡kovlevich.
Language and languages--Study and teaching--Psychological aspects.
Language and languages--Study and teaching--Soviet Union.
Learning, Psychology of.
Harvard subject headings:
Galʹperin, Petr I︠A︡kovlevich--Contributions in psychology of learning.
Language and languages--Study and teaching--Psychological aspects
Language and languages--Study and teaching--Soviet Union.
Learning, Psychology of.
Princeton subject headings:
Galʹperin, Petr I︠A︡kovlevich.
Language and languages--Study and teaching--Psychological aspects.
Psycholinguistics.
Second language acquisition.