"brown, lester r. "
state of the world 1988: / lester.r. brown - 1 ed. - usa : w.w. norton 1988. - "xv, 237p.; 23 cm."
0-393-30440-x
state of the world 1988: / lester.r. brown - 1 ed. - usa : w.w. norton 1988. - "xv, 237p.; 23 cm."
0-393-30440-x