共 94 条
[1]
ABERCROMBIE KC, 1975, POPULATION GROWTH EC, V1, P345
[3]
BERENT J, 1970, POP STUD-J DEMOG, V24, P247, DOI 10.1080/00324728.1970.10406128
[4]
BERENT J, 1970, POPULATION STUDIES, V24, P53
[5]
BERG A, 1973, NUTRITION FACTOR ITS
[6]
BERLAN JP, 1977, GEOPOLITICS HUNGER
[7]
Berry R. A., 1979, AGRARIAN STRUCTURE P
[9]
BORGSTROM G, 1973, FOOD PEOPLE DILEMMA
[10]
BROWN L, 1970, SEEDS CHANGE