00993pam a2200253 i 4500991002681939707536070723s1977 ctu b 001 0 eng 0837189365 b13564092-39ule_instBiblioteca Interfacoltàita020.1Orr, James McConnell626195Libraries as communication systems /J. M. OrrWestport, Conn. :Greenwood Press,1977X, 220 p. ;22 cm.Contributions in librarianship and information science ;17BibliotecheSistemi di comunicazione SistemiTeorieApplicazioni alla biblioteconomia .b1356409202-04-1423-07-07991002681939707536LE002 020.1 ORR12002000742520le002gE27.00-l- 00000.i1452195723-07-07Libraries as communication systems1218392UNISALENTOle00223-07-07ma -engctu00