مؤلف: Kenneth B. Newman

Sampling theory considers how methods for selection of a subset of units from a finite population (a sample) affect the accuracy of estimates of descriptive population parameters (mean, total, propor …

This is the first volume in the Birds of Africa series, covering the rich avifauna of the world’s second largest continent. Volume I treats the first 10 orders, from Ostrich to birds of prey.Universa …