Deduction of sales by India Tourism Development Corporation from its shop at
Netaji Subhash International Airport at Kolkata.

28. Where India Tourism Development Corporation liable to pay tax under the Act makes sales of any goods from its duty-free shop at the Netaji Subhash International Airport at Kolkata, to a bonafide foreign tourist for a sale price paid in foreign currency or foreign travellers' cheque, it may, subject to the condition specified in rule 33, for the purpose of determining its turnover of sales on which tax is payable, deduct the turnover of such sales under clause (d) of sub-section (1) of section 16 from its turnover of sales and produce documentary evidence in support of such claim as referred to in rule 33.