15. Power to enter upon land, etc.

(a) require any person to furnish to such authority as may be specified in the order such information in his possession relating to ti e property as may be specified ;
(b) direct that the owner or occupier of the land shall not dispose of it or alter it without permission from the Government till the expiry of such period as may be specified in the order ;
(c) authorise any person to perform in respect of any land all or any of the functions referred to in sub-section (2) of Section 4 of the Land Acquisition Act, 1894 (Act I of 1894).