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Petrov V.V., Kychkina A.E. SOCIAL EFFECTS IN THE INTRODUCTION OF SERVICES FOR PARENTS FOR INFORMING AND NON-CASH PAYMENT OF SCHOOL MEALS. Informatics and education. 2018;(3):52-54. (In Russ.)



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ISSN 0234-0453 (Print)
ISSN 2658-7769 (Online)