00586nam a22001811 4500 1/13616 981002s1969 enk 000 0eng d 710064543 14075 DLC GR-PeUP 512.89602433 PE Peston, Maurice Harry. Elementary matrices for economics / by Maurice H. Peston. London : Routledge & Kegan Paul, 1969. vii, 110 p. ; 16 cm. Economics Mathematical models. Matrices. INST UNIPILB MAIN 20040709 512.89602433 PE 00106854 00106854 LOAN 0 1