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                                                    | 43 | Keyway Stresses for Non-metallic Gears and Shafts Formulas and Calculator | 
                                            
                                                
                                                    | 44 | Phenolic Laminated Gears Design Formulas and Calculator | 
                                            
                                                
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                                                    | 50 | Helical Gears Shafts Parallel Exact Exact Center Distance Design Equations and Calculator | 
                                            
                                                
                                                    | 51 | Helical Gears Shafts Parallel  Center Distance Approximate Design Equations and Calculator | 
                                            
                                                
                                                    | 52 | Plastic Straight Bevel Gears Rated Design Hp, Operating Stress Equations and Calculator | 
                                            
                                                
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