450 
Meteorology, needed research, 142, 
TS PCV, AKO), WO, Bris = 116), 
428-30 
Mexico, 45 
industrial raw material, 414-15 
population-supporting capacity, 
247, 421 
precipitation variations, 143-55 
Meyer, A. F., 81 
Michelson, A. T., 133 
Microclimates, 186, 431 
Mid-Century Conference on Re- 
sources, 314 
Middle East, 42, 45, 51, 179-82 
Millemale ence 
Missouri River, 191 
water deficiency, 79 
Mordy, W. A., 301 
Moricandia nitens, 338 
Muhlenbergia pungens, 5 
Muhlenbergia species, 239 
Murphy, A. H., 356, 360 
National Council for Applied Re- 
search, Netherlands, 260, 274— 
National Resources Board, 279 
Navajo Indians, 22 
Netherlands, the, saline research, 
27/3 
Neumann, J., 316 
New Mexico, 5 
arroyo cutting, 115-18 
ice nuclei, 302-4 
introduced grasses, 238 
land use and misuse, 229, 236-37 
precipitation, 156, 235 
water need and yield, 75, 81, 
156, 235 
water quality, 284-86 
Nigeria, 61 
Nile River, 18, 47, 49, 54 
Nomadism, 61, 86, 183-84, 381-82 
INDEX 
Oasis economy, I10, 326-27 
Olinsted? GE eu7; 
Organization for European Eco- 
nomic Cooperation, Working 
Party, Nos 8; 27gsy277eeag2 
Oryzopsis holciformis, 398 
Oryzopsis miliacea, 338, 346, 353, 
395, 398 
Pakistan, 51 
Thal development, 54-56 
Panicum antidotale, 398 
Panicum turgidum, 398 
Papago Indians, 16 
Parish, 55 Bs, 35 
Parthentum argentatum, 22, 414, 
415 
Paulsen, C. G., 279 
Pedilanthus species, 414 
Peganum harmala, 399 
Periploca aphylla, 399 
Phalaris bulbosa, 396, 398 
Phalaris tuberosa, 336, 338, 346, 
3475 359 
Phillips, R. W., 335 
Phoenix dactylifera, 409 
Phreatophytes, 52, 198 
Physiology, needed research, 22- 
24, 39; 397, 431 
range animals, 333-34 
relation to drought, 344-47 
Phytogeography, 392 
Phytosociology, 97, 392 
Pima Indians, 16 
Pinus edulis, 164 
Pinus ponderosa, 163 
Pistacia species, 400 
Plantago, 415-16 
Plantago albicans, 338 
Plant, adaptation, 343-67 
adjustments, 7-12, 23 
breeding, 39, 416-18 
distribution, 4-5, 37-38, 383-84 
indicators, 97, 183, 392 
