00475nam a22001335a 4500 EEA.libagro001108 20141009133520.0 130809s1956####xxua##########000#0#eng#d 581.5072 Curtis, John T. (John Thomas), 1913-1961. Plant ecology workbook : laboratory field and reference manual / J. T. Curtis. Minneapolis : Burguess, 1956. 86 p. : il. ; 28 cm. AR-BbBCA BIB. AGRONOMIA 581.5072 C979 1958/0108