The relationships between, and the effects of training on Piagetion conservation tasks - Flink, Ernest William, 1946- (Ann Arbor, Mich. : University Microfilms International, 1973)
Thesis (Ph.D.) - University of Northern Colorado, 1973.
Keywords: Piaget, Jean, b.1896 -- Addresses, essays, lectures; Cognitive in children -- Addresses, essays, lectures