"This is a study of land tenure and rural organization in Persia before the land reforms of 1962-6. The work provides an outline of the history of land tenure and land revenue administration from Islamic times down to the Iranian Constitutional Revolution in 1906 which brought an end to the medieval system of land tenure. It also examines the Pahlavi periods, and covers topics such as legal codes, irrigation, large landlords, peasant proprietors, share-cropping arrangements, agricultural methods and standards of living."

Because of the short time the synthetic soil conditioners have been available for test, it is not possible to draw other than tentative conclusions. However, it appears fairly evident that they can effect marked improvement in the physical state of soils if properly applied. Rates of application of the order of 0.05% are such that at current prices the usefulness of these products in agriculture is likely to be limited to surface application with high value crops or for special purposes. It is not likely that they will constitute a replacement for, but will be an important supplement to sound agricultural practices. A sound body of information on which to base recommended procedures for the great variety of crops and soils found in the country at large is gradually accumulating because of the widespread interest of agronomists and others in this latest development from the field of chemistry.

The authors discuss in the introduction the literature about the distribution and placemement of fertilizers in agricultural experiments in U.S.A. in such crops as cotton, corn, potato, beans and some vegetables. An experiment was carried out with corn in a randomized block with 7 treatments, and 4 repetitions. The plots were 11,2m wide by 10m long. The 7 treatments were the following: one broadcast, 3 applications of fertilizer in hills and 3 in rows. In the latter six treatments application in rows or hills was combined with applications in three different depths: below the seeds without mixing the soil, below the seeds but with mixing of the soil, and above the seeds without mixing the soil. The variation between treatments was significant, and the best treatment was the application of fertilizer in hill, below the seeds and with mixing of the soil. The most unfavorable was application in rows above the seed without mixing of the soil. The second best treatment was the application by broadcasting the fertilizer, with mixing the fertilizer and soil by hoeing. New experiments will be carried out, applying the fertilizer in two rows, parallel on each side to the seed row, at three depths: above, below and level with seeds planted. In their discussion the authors stress the need for more experimentation on the methods of applying fertilizers not only to corn plants, but with respect to all main crops and diferent types of soils.

The Walter W. Sadler Papers consist of reprints of 55 of Sadler's published papers. Sadler published a variety of journal articles and essays on topics such as the hatchability of poultry eggs, pasteurization of milk, care of bats, salmonella in turkeys, avian diseases, animal-borne infections, and food-borne diseases of animal origin, to name only a few.

The USDA Soil Conservation Service Films consist of films produced by and for the Soil Conservation Service. These films were used for education, training, and public service announcements.