Anna Botsford Comstock Poradie kníh (chronologicky)

'A matchless handbook for decades, this classic has been the natural history bible of countless teachers and others who seek information about their natural environment. Written originally for those elementary school teachers who knew little of common plants and animals, and even less about earth beneath their feet and the skies overhead, this book is for the most part as valid and helpful to day as it was when first written in 1911.