Literature: Its Principles and Problems (Classic Reprint)

Aesthetics: Its Problems and Literature (Classic Reprint)

Tactical Principles and Problems (Classic Reprint)

Botany, Principles and Problems (Classic Reprint)

Piano Teaching: Its Principles and Problems (Classic Reprint)

Botany, Principles and Problems (Classic Reprint)

Modern Accounting: Its Principles and Some of Its Problems (Classic Reprint)