Talvez deva tentar algumas variações de ortografia:
walter viola » walter vilella (Expandir a Pesquisa), walter villela (Expandir a Pesquisa), walter jolan (Expandir a Pesquisa)
made thermal » mode thermal (Expandir a Pesquisa), grade thermal (Expandir a Pesquisa), age thermal (Expandir a Pesquisa)
thermal d » thermal 3d (Expandir a Pesquisa), thermal di (Expandir a Pesquisa), thermal dc (Expandir a Pesquisa)
maier i.l » maier il (Expandir a Pesquisa), maier ina (Expandir a Pesquisa), maier c.s (Expandir a Pesquisa)
mather hm » mather h (Expandir a Pesquisa), mather m (Expandir a Pesquisa), mather em (Expandir a Pesquisa)
j mather » j mathew (Expandir a Pesquisa), j maher (Expandir a Pesquisa), j matthew (Expandir a Pesquisa)
d maier » b maier (Expandir a Pesquisa), _ maier (Expandir a Pesquisa), a maier (Expandir a Pesquisa)
i.l res » biol res (Expandir a Pesquisa), a.l reis (Expandir a Pesquisa), e.l reis (Expandir a Pesquisa)
viola m » viola _ (Expandir a Pesquisa), viola a (Expandir a Pesquisa), viola b (Expandir a Pesquisa)
j made » j mader (Expandir a Pesquisa), j madej (Expandir a Pesquisa), j madel (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j made thermal d maier i.l res ) or ( j mather hm _ walter viola m ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j made thermal d maier i.l res ) OR ( j mather hm _ walter viola m ))*.