The phrase "and of methods" is correct and usable in written English.
It can be used when discussing various approaches or techniques in a particular context, often in academic or technical writing.
Example: "The study focuses on the analysis of data and of methods used to interpret the results."
Alternatives: "and techniques" or "and approaches".
Refinements in scientists' understanding of cancer and of methods of drug design and screening have led to the production of a significant number of targeted therapies.
The organization's responsibilities include increasing awareness of the disease and of methods of prevention, promoting research, and allocating resources for treatment.
Reliable sea charts were not introduced until the advent of the magnetic compass and of methods for determining latitude and longitude.
The manufacture of silk and silk products originated in the highly developed Chinese culture; the invention and development of sericulture (cultivation of silkworms for raw-silk production) and of methods to spin silk date from 2640 bc.
Further evaluation of protein effects on carbohydrate fermentation and of methods that allow accurate comparison of treatments for their effect on ruminal OA production are warranted.
Cindy also presented a concise, but clear, explanation of the "Big Bang" theory and of methods used to calculate the age of the universe and the age of Earth.
As a poet, I fucking hated lawyers and their Latin and esquires and lack of methods".
The Egyptians were pertinacious keepers of lists, and recorders of methods and procedures.
However, in qualitative research transparency of purpose and of method is not always easy to achieve.
Without a reformation of the interpretation of Islam and evolution of methods of governance, the possibilities of Muslim people to achieve will remain restricted and less secure.
