00340nam a2200133 45000010006000000050017000069000010000231000026000332450057000595000031001167730035001479420007001829990017001897692220260918152738.0 a56595 aOJEDA PAULLADA, Pedro aLa ley orgánica de PEMEX y organismos subsidiarios aReformas legales federales gE010.113 M634 1992. 343-350 pp c16 c76922d76922