Русско-английский научно-технический словарь
ещё в ... веке
• This anomaly was measured even in (or as early as) the 19th century, long before there was any theory to explain it.
Русско-английский научно-технический словарь
• This anomaly was measured even in (or as early as) the 19th century, long before there was any theory to explain it.