Sairin, Syafri. (1991). In the shade of the oil palm :Javanese plantation workers in North Sumatra /by Sjafri Sairin. : .
Sairin, Syafri. In the shade of the oil palm :Javanese plantation workers in North Sumatra /by Sjafri Sairin. : , 1991
Sairin, Syafri. In the shade of the oil palm :Javanese plantation workers in North Sumatra /by Sjafri Sairin. : , 1991.