机读格式显示(MARC)

• 000 01032000002200301 45 0

• 000 1000037998

• 001 0000293833

• 005 19990209143042.0

• 008 19911012s1978 iaua b 00110 eng

• 010 __ |a 77017200

• 020 __ |a 0813817854 : |c 16.11

• 040 __ |a CAU

• 050 __ |a HD1714 |b .H45

• 082 __ |a 333.9'13'0978

• 090 __ |a S27/HRW

• 100 10 |a Hexem, Roger W.

• 245 10 |a Water production functions for irrigated agriculture / |c Roger W. Hexem, Earl O. Heady.

• 260 0_ |a Ames : |b The Iowa State University Press, |c 1978.

• 300 __ |a xvi, 215 p. : |b ill. ; |c 24 cm.

• 504 __ |a Includes bibliographies and index.

• 650 _0 |a Irrigated farming |x Economic aspects--Mathematical models.

• 650 _0 |a Production functions(Economic theory)

• 650 _0 |a Irrigated farming |x Economic aspects |z The West--Mathematical models.

• 700 10 |a Heady, Earl Orel, |d 1916-

• 901 __0691004147

• 905 __ |a CAU |f S27/HRW |b 38682(or.)

• 907 __ |a CAU |f S27/HRW |b 38682(or.)

• 999 __ |M yu |m 1999020914304