the petitioner were asked to get their quotas fixed on the basis of their p•st impots. On April 2, 1958, the Government of!ndia promulgated the Non-Ferrous Metals Control Order, 1958 under the Essential Commodities Act, 1951 by virtue of which free sale of copper was banned. Any import of copper by the established licence holders was to be distributed under the directions of the Controller of Nonferrous Metals. Under the Non-Ferrous Metals Control Order, 1958. and also under the Import Trade Regulations, the established importers were not free to sell the metals imported by them gaist their quota licences even to the DGS&D. The petitioner, ,,'4i: ·lldtt. to effect supplies to the DGS&D had to obtain additional impoir.Iicence. Under the Import Trade Control Policy; · the established importers including the p!titio"'r obtained quota)icences for import of non-ferrous metals for the licensing period upto April, 1964-March, 1965, but the imports mentioned here were to be distributed'•orlly under the directions of the Controller of Non-Ferrous Metals orthe Import Trade Control Authority. On September 14, 1965, the.Gyerf[nJ~~.Pf India promulgated the Scarce Industrial Materials .Contfot Ordet, 1965,, under the Defence of India Rules. Stocks of non-ferrous metals including incoming_imports \yere thus fro;i;en.--'.J'he Non-Fefrous Metals Control Order, 1958, was repealed. The Scarce Industrial Materials Control Order, 1965 was also repealed on June 6, 1966. The Government of ln:lia, in plaoing orders with the petitioner used to grant import licences in terms of the contract. The petitioner had been importing and supplying non-ferrous metals to respondents 1, 2 and 3 during the last 19 years. Respondent No. 2 had agreed to pay and was paying the Central Sales Tax and/or West Bengal Sales Tax whichever was applicable to the petitioner in terms of the contract. In 1966, this Cnrt h'ld in K.G. Khosla and Co. v. Deputy Commissioner of Conmei·cial Taxes(!) hereinafter referred to as the K/10sla Case, that the sale by Khosla & Co. to DGS&D in India of axle-box bodies manufactured in Belgium by their principal occasioned the movement of goods in course of import and sales tax was not exigible on the transaction in view of s. 5(2) of the Central Sales Tax Act, 1956. On the basis of this judgment, respondent No. 2 issued an order (Annexure P-1) to all the authorities concerned including respondent No. 4 namely, the Pay and Accounts Officer, Ministry of Works, Housing and Supply directm~ that sales tax sh?uld no~ be allowed in respect of supply of stores which has been specifically imported against licences issued by the Chief Controller of Imports and Exports on the basis of Import Recommendation Certificates issued by the DGS&D or other authorities like the State Trading Corporation for supplies against contracts placed by the DGS&D. The Pay and Accounts Officer, acting on Annexure P-1 deducted the amounts of sales tax paid by the respondents under all the old contracts from the current bills which were submitted by the petitioner to him. Respondent No. 4 actually deducted a sum of Rs. 60,780/- from the bills which were pending payment and also threatened to recover Rs. 2,35,130·01 being the amount paid by respondent No. 2 as sales tax it1 respect 0 'j·