MATHEMATICS TODAY TWELVE INFORMAL ESSAYS
LYNN ARTHUR STEEN1978 年出版367 页ISBN：3540903054
INVENTORY OF MARRIAGE AND FAMILY LITERATURE VOLUME VI
DAVID H.OLSON1980 年出版390 页ISBN：
CRYSTALLINE SYMMETRIES AN INFORMAL MATHEMATICAL INTRODUCTION
1990 年出版137 页ISBN：0750300418
Strategies for Developing the Informal Sector
1995 年出版171 页ISBN：9789283321675;9283321677
INFORMAL GOVERNANCE IN THE EUROPEAN UNION
THOMAS CHRISTIANSON AND SIMONA PIATTONI2003 年出版273 页ISBN：1843763516
Studies in The Mathematical Theory of Inventory and Production
Kenneth J.Arrow1958 年出版340 页ISBN：
INFORMAL INSTITUTIONS AND CITIZENSHIP IN RURAL AFRICA
2010 年出版296 页ISBN：052119296X
AN INFORMAL INTRODUCTION TO THEORETICAL FLUID MECHANICS
JAMES LIGHTHILL1986 年出版260 页ISBN：
Informal corporate disclosure under Federal Securities Law
Anne Sherry2016 年出版299 页ISBN：9781454875178
