by Gianantonio Castiglioni  
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The "BOCCHI-DUBOIN SYSTEM", published by Mursia, is available at main book shops

SCRIBE NOTES
A GENERAL IDEA ABOUT THE SYSTEM
THE OPENING BIDS
USEFULNESS OF BOCCHI-DUBOIN SYSTEM FOR NORMAL HUMAN BEINGS
NORBERTO BOCCHI
 
GIORGIO DUBOIN
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concept by GCVB