00855nam a22002057a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082002200102111009600124245001600220260004100236300002800277500006100305505025800366650002500624CHAP20220329140843.0971013s1967            r     10010     d  a58684  a59656  a63816  cCHAP  a636.0842bI5 196700aInternational Seminar on Integrated Surveys of Natural Grazing Areas (n2d: 1967c: Delft)  aProceedings  aDelft :bITC-UNESCO Centre,c1967-68  apág. varíab: ilus.  a16 folletos numerados S.15 a S.28, agrupados en una caja  aContenido: S15 The pampa problem and its solution.- S16 The landscape concept and its use in the study of grassland territories.- S17 Grass land surveys and grassland production problems of cattle in grazing areas.- S20 Integrated surveys of pastoral ar14aPastoreoxCongresos.