Columbia subject headings:
Agriculture--Economic aspects--Malaysia--Case studies.
Agriculture--Social aspects--Malaysia--Case studies.
Harvard subject headings:
Agricultural innovations--Malaysia--Permatang Bogak (Pulau Pinang)
Agriculture--Economic aspects--Malaysia--Permatang Bogak (Pulau Pinang)
Rice--Economic aspects--Malaysia--Permatang Bogak (Pulau Pinang)
Rice--Malaysia--Pinang--Case studies.
Rice--Varieties--Malaysia--Permatang Bogak (Pulau Pinang)
Princeton subject headings:
Agricultural innovations--Malaysia--Permatang Bogak (Pinang).
Agriculture--Economic aspects--Malaysia--Permatang Bogak (Pinang).
Rice--Economic aspects--Malaysia--Permatang Bogak (Pinang).
Rice--Varieties--Malaysia--Permatang Bogak (Pinang).