communio bonorum

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
COMMUNIO BONORUM, civil law. Common goods. 
     2. When a person has the management of common property, owned by 
himself and others, not as partners, he is bound to account for the profits, 
and is entitled to be reimbursed for the expenses which he has sustained by 
virtue of the quasi-contract which is created by his act, called communio 
bonorum. Vicat; 1 Bouv. Inst. n. 907, note. 
    

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