C Priestley - Lethality of Essential Oil Constituents Towards the Human Louse, Pediculus Humanus,
C Burkhart - Relationship of Treatment-Resistant Head Lice to the Safety and Efficacy of Pediculi
H Ewing - The Male Genital Armature in the Order Anoplura, Or Sucking Lice - Annals of the Entomo
Símbolos naturales -Mary Douglas
Maderspacher Planet of the Apes
Chimpanzees and Human Culture
How Do Chimpanzees Have to Say