"Geometría." . . "Principles of geometry / 6, Introduction to the theory of algebraic surfaces and higher loci" . . "Principles of Geometry : Volume VI : Introduction to the Theory of Algebraic Surfaces and Higher Loci" . . . . . "Principles of geometry / 6 Introduction to the theory of algebraic surfaces and higher loci" . . . "Principles of geometry. Volume 6, Introduction to the theory of algebriac surfaces and higher loci"@en . . "Principles of geometry Vol. 6 Introduction to the theory of algebraic surfaces and higher loci" . . "Principlew of geometry. . V. 6, Introduction to the theory of algebraic surfaces and higher loci" . . "Introduction to the theory of algebraic surfaces and higher loci" . . . . . . . . . . . . . . "Principles of geometry / vol. VI, Introduction to the theory of algebraic surfaces and higher loci" . . . "Principles of geometry. 6, Introduction to the theory of algebraic surfaces and higher loci"@en . "Principles of geometry. 6, Introduction to the theory of algebraic surfaces and higher loci" . . . . "Principles of Geometry Volume 6 Introduction to the Theory of Algebraic Surfaces and Higher Loci"@en . . . . "Principles of geometry. Vol. 6, Introduction to the theory of algebraic surfaces and higher loci" . "Principles of geometry/ 6, Introduction to the theory of algebraic surfaces and higher loci" . . "Surfaces algébriques." . . "Geometrija." . . "Geometrie." . . . .