00446nam a2200169 a 450000500170000000800410001704000250005804100080008310000190009124500520011026000230016230000110018565000090019665000160020565000330022170000220025420151123092748.0140220b1970 ||||| |||| 00| 0 eng d aCO-BoIAVHcCO-BoIAVH aeng aRalph, C. John aTerminology used in estimating numbers of birds aS. l.bS n.c1970? a160 p. aAves aInventarios aMetodologías científicas aScott, J. Michael