The origins of technology skill complementarity av Goldin, Claudia

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Inequality, predation and welfare av Grossman, Herschel I.

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Differentials in Philippine fertility from the 1990 census av Zablan, Zelda C.

Reproductive potential and fertilty control

Environmental science for Philippine schools textbook av Deauna, Melecio C.

Cognitive planning the psychological basis of intelligent behavior av Das, J. P. (Jagannath Prasad)

The value of life biological diversity and human society av Kellert, Stephen R.

The Liberation debate rights at issue

School wars resolving our conflicts over religion and values av Gaddy, Barbara B. 1953-

Encyclopedia of human rights