Presidential Decree no. 857 revised charter of the Philippine ports authority : as amended by executive order no. 513 dated 16 November 1978, executive order no. 546 dated 23 July 1979, letter of instruction no. 1005-A dated 11 April 1980, executive order no. 710 dated 27 July 1981, executive order no. 783 dated 165 [sic] March 1982, executive order no. 159 dated 13 April 1987. - Philippines (Manila Corporate Communications, Philippine Ports Authority, 1987)
Cover title.
Keywords: Philippines -- Politics and government -- 1973-1986.