TY - BOOK A1 - Dobzhansky, T. T1 - The biological basis of human freedom, New York and London (Columbia University Press) 1969. Y1 - 1969 N1 - Marks in the copy ER - TY - BOOK A1 - Dobzhansky, T. T1 - The biology of ultimate concern, New York (The New American Library) 1967. Y1 - 1967 N1 - Notes in the copy ER -