imaginal disc 



Insecta Kaurov 



Nubler 

 Sprey 

 limb 



Aves Wolpert 



mechanism 



Acrasiales Durston 



Vertebrata Horder 

 mesoderm induction 



Amphibia Boterenbrood 

 neural plate 



Amphjbia Woellwarth 



ooplasmic segregation 



Mollusca Dongen 

 position 



Aves Curtis 



role of intersegm. region 



Insecta Nubler 



spacing 



Cyanophyc Wilcox 

 stability 



Cephalop Marthy 

 testis 



Homo Posinovec 



theoretical study 



Lewis 



PELVIC GIRDLE 



see Skeleton 



PEPTIDES 



see Proteins 



PERITONEUM 



see Body cavities 



PERIVITELLINE FLUID 

 see Egg(s) 



PERMEABILITY 



PHENOCOPIES 



Angiosp Haccius 



Insecta Capdevilla 



PHOSPHORUS 



see Chemical elements 



PHOTOMORPHOGENESIS 



Angiosp 



Mohr 

 Schopfer 

 Wagner 

 Wellmann 



PHYLLOTAXIS 

 see also Leaf 



Pteridoph Lindenmayer 

 Spermatoph Lindenmayer 



PHYLOGENESIS 



PHYSIOLOGY (developmental) 

 see Embryology (experi- 

 mental); Embryology 

 (physiological) 

 see also Development 



PIGMENT(ATION) 



see also Chromatophore(s); 

 Melanophore(s); 

 Neural crest 



Amphibia Hach 



Hoperskaya 

 La Spina 



Angiosp Pretova 



Ryczkowski 



Aves Groenendijk 



Homo Hach 



Insecta Bouthier 



Colin 

 Egelhaaf 

 Rembold 



Mammalia Deol 

 Hach 

 Hornby 



PINEAL ORGAN (& para- 

 pineal organ) 



Aves Doskocil 



Marraro 



Cyclostom Meiniel 



Mammalia Hewing 



Vertebrata Collin 



Meiniel 



Oksche 



PITUITARY 



see Hypophysis 



PLACENTA(TION) 



see also Blastocyst; Embryo- 

 maternal relationships; 

 Pregnancy 



autoradiography 



Mammalia Peters 

 binucleate cells 



Mammaha Steven 

 biophysics 



Mammalia Bara 

 comparative study 



Mammalia Harrison 

 Strauss 

 culture in vitro 



Homo Baker 



cytology 



Mammalia Taverne 

 development 



Mammalia Bulmer 

 Peel 

 differentiation 



Mammalia New 

 effect of chemicals 

 Homo Jiricka 



Mammalia Jiricka 

 effect of fetectomy 



Mammalia Mohallal 

 effect of mat. malnutrition 

 Mammalia Bernocchi 

 Fraschini 

 Manfredi 

 Porcelli 

 Redi 

 Scherini 

 effect of ovariectomy 



Mammalia Legrand 

 effect of prostaglandins 



Mammalia Mohallal 

 endocrinology 



Homo Baker 



Mammalia Colombo 

 Okker 



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