Ricardo Ayala has written:
'Two new subgenera of bees in the genus Centris (Hymenoptera: Apidae)' -- subject(s): Accessible book, Bees, Classification, Hemisia
Robert H. Ayala has written: 'Quarter to six'
Ayala Talpai has written: 'Felting needles for fiber fanatics'
Leopoldo Ayala Michelena has written: 'Teatro seleccionado'
Ricardo Monti has written: 'Teatro'
Ricardo Kubrusly has written: 'Acordanoite'
Ricardo Castillo has written: 'Islario'
Ricardo Medeiros has written: 'Zininho'
Mariblanca Ayala has written: 'Internet' -- subject(s): Internet, Law and legislation
Ricardo Mazal has written: 'Ricardo Mazal' -- subject(s): Exhibitions
Isaac Ricardo Stein has written: 'Isaac Ricardo Stein'
Ricardo Carvalho has written: 'Arquivo confidencial'
Ricardo Falla has written: 'Mi capital'