INTERNATIONAL AGREEMENTS - FIRST LOME CONVENTION BETWEEN THE EEC AND THE ACP STATES - PROVISIONS ON FINANCIAL AND TECHNICAL CO-OPERATION - PROCEDURE FOR AWARDING PUBLIC WORKS CONTRACTS - RESPECTIVE FUNCTIONS OF AN ACP STATE AND THE COMMISSION - POWER OF AN ACP STATE TO CONCLUDE CONTRACTS - AWARD OF A CONTRACT SUBJECT TO COMMISSION APPROVAL - DUTY OF THE COMMISSION TO ENSURE THAT JUDICIOUS USE IS MADE OF THE EUROPEAN DEVELOPMENT FUND ' S RESOURCES - LIABILITY OF THE COMMUNITY PUT IN ISSUE - WHETHER PERMISSIBLE ( EEC TREATY , ART . 178 AND SECOND PARAGRAPH OF ART . 215 ; FIRST LOME CONVENTION BETWEEN THE EEC AND THE ACP STATES OF 28 FEBRUARY 1975 )