Brower, James . Field and laboratory methods for general necology / James Brower,Jerrold Zar and Carl Von Ende. - 3rded. / . - U.S.A : Wm.C.Brown Publishers , 1990. - ix,237p. : ills.,figs.,maps,plates,tables ; 23cm 1 Floppy . Includ index ISBN: 0697051455 NULL Subjects--Index Terms: ECOLOGY Dewey Class. No.: 577 / BRO/F