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        Dannemann/Schulze, German Civil Code, Volume I
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            Book 2 Law of Obligations
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                Division 3 Contractual obligations
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                    Title 2 Reciprocal contracts
                    - § 323 Revocation for nonperformance or for performance not in conformity with the contract
 
 
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                    Title 2 Reciprocal contracts
                    
 
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                Division 3 Contractual obligations
                
 
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            Book 2 Law of Obligations