The Supply Of Teaching Folders For Primary (Middle And Upper Cycles) And Secondary Students (Eso), Aimed At Presenting The Besòs Biodiversity Biodiversity Refuge In The Municipality Of Santa Coloma De Gramenet, And To Foster Environmental Education And The Knowledge Of Urban Biodiversity. The Object Includes, As Necessary And Associated Features, The Graphic Design, The Writing Of Contents, The Layout And The Production Of The Quoted Folders, In Accordance With The Characteristics, Amounts And Conditions Established By The Technical Prescriptions Plement (Ppt). The Contract Has The Nature Of A Mixed Contract In Integrating Supply And Services Benefits. Given The Economic And Functional Preponderance Of The Supply, Which Represents 70.69 % Of The Estimated Tender Budget, The Applicable Legal Regime Will Be That Of The Supply Contracts, Subtracting The Design, Writing, Layout And Production Features As Accessories And Indispensable For The Proper Execution Of The Main Object. Complementary, It Is The Subject Of The Contract To Improve The Environment And The Promotion Of The Principles Of Circular Economy Of Environmental Nature And To Avoid Possible Significant Negative Impacts On The Environment (Dnsh).