21 be sufficient to examine a sample consisting of one percent of the articles, or five articles, whichever is the smaller number, and if it is established that all the articles in the sample are identical with each other, it shall be presumed that the remainder of the articles in the package, container or receptacle are identical with the articles in the sample. Obstruction to search 38. Any person who— (a) refuses a police officer access to any place when the officer is seeking to exercise his powers under this Act; (b) assaults, obstructs, hinders or delays a police officer in effecting any entry which the officer is entitled to effect under this Act, or in the execution of any duty imposed or power conferred on him by this Act; (c) refuses to give to a police officer any information relating to an offence or suspected offence under this Act or any other information which may reasonably be required of him and which he has in his knowledge or power to give; or (d) knowingly gives false information to a police officer seeking to exercise his powers under this Act; shall be guilty of an offence and shall be liable on conviction to a fine not exceeding ten thousand penalty units or to imprisonment for a term not exceeding twelve months, or to both. PART IV REGISTER OF COPYRIGHTS The register of copyrights 39.—(1) For the purposes of this Part, where the copyright in a work is owned by more than one person (otherwise than as joint owners) the rights held by each of those persons shall be regarded as a separate copyright. (2) The Registrar shall keep a register of copyrights in works other than broadcasts or cable programs. (3) The register, and copies of the works concerned, shall be made available for inspection by members of the public on payment of a fee of not more than twenty fee units, or such larger amount as may be prescribed in the regulations. (4) The existence and enforceability of a copyright shall be independent of whether or not it is registered under this Part. Registration and issue of certificate 40.—(1) If the owner of a copyright in a work wishes to register it, he shall lodge with the Registrar— (a) a claim for registration, in a form approved by the Registrar; (b) a copy of the work in which copyright is claimed; (c) particulars of—