Biology : the study of life : laboratory manual - Bjork, W. B. 4 0 16; Schraer, Wiliam D.;Bjork, W.B.;Horn, Ruth D.;Stoltze, Herbert; 5 (Englewood Cliffs, N.J. ;;Needham, Mass. : Prentice-Hall, 1993)
Keywords: 2 -- 0; 6; 20; 20; 2