Pfg to Wildflowers of Northeastern and North-Central North AmericaRoger Tory PetersonEsaurito4,3Avvisami
Where to Find Ferns: With a Special Chapter on The Ferns Round LondonHeath Francis GeorgeEsaurito4,3Avvisami
The Queen Who Banished Bugs: A Tale of Bees, Butterflies, Ants and Other PollinatorsFerris Kelly RobinsonEsaurito4,3Avvisami
Botanical Essays from Kent: Some Botanical Features of a University Town in OhioTom S. CooperriderEsaurito4,3Avvisami
Hardy Coniferous Trees: Being a Concise Description of Each Species and VarietyWebster A. D. (Angus Duncan)Esaurito4,3Avvisami
Synopsis of the North American Lichens, Pt. 1: Comprising the Parmeliacei, Cladoniei, and Coenogomei; 1Edward TuckermanEsaurito4,3Avvisami
Guide to the British Mycetozoa Exhibited in the Department of Botany, British Museum (Natural History)Arthur ListerEsaurito4,3Avvisami
Altruism: Its Nature and Varieties; The Ely Lectures for 1917-18George Herbert PalmerEsaurito4,3Avvisami